210112122111 has 32 divisors (see below), whose sum is σ = 300321658368. Its totient is φ = 130323853440.

The previous prime is 210112122107. The next prime is 210112122113. The reversal of 210112122111 is 111221211012.

It is a happy number.

It is not a de Polignac number, because 210112122111 - 2² = 210112122107 is a prime.

It is a super-4 number, since 4×210112122111⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210112122113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9989596 + ... + 10010606.

It is an arithmetic number, because the mean of its divisors is an integer number (9385051824).

Almost surely, 2^210112122111 is an apocalyptic number.

210112122111 is a deficient number, since it is larger than the sum of its proper divisors (90209536257).

210112122111 is a wasteful number, since it uses less digits than its factorization.

210112122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24991.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210112122111 its reverse (111221211012), we get a palindrome (321333333123).

The spelling of 210112122111 in words is "two hundred ten billion, one hundred twelve million, one hundred twenty-two thousand, one hundred eleven".