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10211203213 = 99710241929
BaseRepresentation
bin10011000001010001…
…01001100010001101
3222100122011212110121
421200220221202031
5131403032000323
64405125304541
7511020536521
oct114050514215
928318155417
1010211203213
11436aa5a122
121b8b865151
13c69697ba3
146cc21dd81
153eb6cba5d
hex260a2988d

10211203213 has 4 divisors (see below), whose sum is σ = 10221446140. Its totient is φ = 10200960288.

The previous prime is 10211203199. The next prime is 10211203241. The reversal of 10211203213 is 31230211201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6183777769 + 4027425444 = 78637^2 + 63462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10211203213 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 (10211203283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5119968 + ... + 5121961.

It is an arithmetic number, because the mean of its divisors is an integer number (2555361535).

Almost surely, 210211203213 is an apocalyptic number.

It is an amenable number.

10211203213 is a deficient number, since it is larger than the sum of its proper divisors (10242927).

10211203213 is an equidigital number, since it uses as much as digits as its factorization.

10211203213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10242926.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10211203213 its reverse (31230211201), we get a palindrome (41441414414).

The spelling of 10211203213 in words is "ten billion, two hundred eleven million, two hundred three thousand, two hundred thirteen".

Divisors: 1 997 10241929 10211203213