210111011121 has 16 divisors (see below), whose sum is σ = 305624309760. Its totient is φ = 127336551120.

The previous prime is 210111011113. The next prime is 210111011179. The reversal of 210111011121 is 121110111012.

It is not a de Polignac number, because 210111011121 - 2³ = 210111011113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210111011097 and 210111011106.

It is not an unprimeable number, because it can be changed into a prime (210111011191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1698456 + ... + 1817958.

It is an arithmetic number, because the mean of its divisors is an integer number (19101519360).

Almost surely, 2^210111011121 is an apocalyptic number.

It is an amenable number.

210111011121 is a deficient number, since it is larger than the sum of its proper divisors (95513298639).

210111011121 is a wasteful number, since it uses less digits than its factorization.

210111011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172796.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 210111011121 its reverse (121110111012), we get a palindrome (331221122133).

The spelling of 210111011121 in words is "two hundred ten billion, one hundred eleven million, eleven thousand, one hundred twenty-one".