10522120121 has 4 divisors (see below), whose sum is σ = 10700461200. Its totient is φ = 10343779044.

The previous prime is 10522120117. The next prime is 10522120139. The reversal of 10522120121 is 12102122501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10522120121 - 2² = 10522120117 is a prime.

It is a super-2 number, since 2×10522120121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10522120121.

It is not an unprimeable number, because it can be changed into a prime (10522120171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89170451 + ... + 89170568.

It is an arithmetic number, because the mean of its divisors is an integer number (2675115300).

Almost surely, 2^10522120121 is an apocalyptic number.

It is an amenable number.

10522120121 is a deficient number, since it is larger than the sum of its proper divisors (178341079).

10522120121 is an equidigital number, since it uses as much as digits as its factorization.

10522120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178341078.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 10522120121 its reverse (12102122501), we get a palindrome (22624242622).

The spelling of 10522120121 in words is "ten billion, five hundred twenty-two million, one hundred twenty thousand, one hundred twenty-one".