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10214141221 = 75411354481
BaseRepresentation
bin10011000001100111…
…10110110100100101
3222100211201010122201
421200303312310211
5131404310004341
64405312254501
7511054524244
oct114063666445
928324633581
1010214141221
114371686529
121b90841431
13c6a18625b
146cc78695b
153ebaac331
hex260cf6d25

10214141221 has 4 divisors (see below), whose sum is σ = 10215503244. Its totient is φ = 10212779200.

The previous prime is 10214141219. The next prime is 10214141317. The reversal of 10214141221 is 12214141201.

It is a happy number.

10214141221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12214141201 = 71916987679.

It can be written as a sum of positive squares in 2 ways, for example, as 1818084321 + 8396056900 = 42639^2 + 91630^2 .

It is a cyclic number.

It is not a de Polignac number, because 10214141221 - 21 = 10214141219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10214141321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669700 + ... + 684781.

It is an arithmetic number, because the mean of its divisors is an integer number (2553875811).

Almost surely, 210214141221 is an apocalyptic number.

It is an amenable number.

10214141221 is a deficient number, since it is larger than the sum of its proper divisors (1362023).

10214141221 is an equidigital number, since it uses as much as digits as its factorization.

10214141221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362022.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10214141221 its reverse (12214141201), we get a palindrome (22428282422).

The spelling of 10214141221 in words is "ten billion, two hundred fourteen million, one hundred forty-one thousand, two hundred twenty-one".

Divisors: 1 7541 1354481 10214141221