210010122211121 has 4 divisors (see below), whose sum is σ = 210151925131044. Its totient is φ = 209868319291200.

The previous prime is 210010122211063. The next prime is 210010122211133. The reversal of 210010122211121 is 121112221010012.

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 109902493266721 + 100107628944400 = 10483439^2 + 10005380^2 .

It is a cyclic number.

It is not a de Polignac number, because 210010122211121 - 2³⁴ = 209992942341937 is a prime.

It is a super-2 number, since 2×210010122211121² (a number of 29 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 210010122211121.

It is not an unprimeable number, because it can be changed into a prime (210010122211621) 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, 70901457740 + ... + 70901460701.

It is an arithmetic number, because the mean of its divisors is an integer number (52537981282761).

Almost surely, 2^{210010122211121} is an apocalyptic number.

It is an amenable number.

210010122211121 is a deficient number, since it is larger than the sum of its proper divisors (141802919923).

210010122211121 is a wasteful number, since it uses less digits than its factorization.

210010122211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141802919922.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 210010122211121 its reverse (121112221010012), we get a palindrome (331122343221133).

The spelling of 210010122211121 in words is "two hundred ten trillion, ten billion, one hundred twenty-two million, two hundred eleven thousand, one hundred twenty-one".