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10122200221 = 77319808611
BaseRepresentation
bin10010110110101010…
…01000010010011101
3222010102201001022111
421123111020102131
5131212240401341
64352225514021
7505560165550
oct113325102235
928112631274
1010122200221
114324799931
121b65aa2911
13c541049b3
146c0492697
153e399a681
hex25b54849d

10122200221 has 8 divisors (see below), whose sum is σ = 11726698304. Its totient is φ = 8557319520.

The previous prime is 10122200213. The next prime is 10122200311. The reversal of 10122200221 is 12200222101.

It is a happy number.

10122200221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10122200221 - 23 = 10122200213 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 (10122200021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9903795 + ... + 9904816.

It is an arithmetic number, because the mean of its divisors is an integer number (1465837288).

Almost surely, 210122200221 is an apocalyptic number.

It is an amenable number.

10122200221 is a deficient number, since it is larger than the sum of its proper divisors (1604498083).

10122200221 is an equidigital number, since it uses as much as digits as its factorization.

10122200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19808691.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10122200221 its reverse (12200222101), we get a palindrome (22322422322).

The spelling of 10122200221 in words is "ten billion, one hundred twenty-two million, two hundred thousand, two hundred twenty-one".

Divisors: 1 7 73 511 19808611 138660277 1446028603 10122200221