210121110122 has 16 divisors (see below), whose sum is σ = 392953764672. Its totient is φ = 81865367520.

The previous prime is 210121110119. The next prime is 210121110161. The reversal of 210121110122 is 221011121012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 210121110097 and 210121110106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682211243 + ... + 682211550.

It is an arithmetic number, because the mean of its divisors is an integer number (24559610292).

Almost surely, 2^210121110122 is an apocalyptic number.

210121110122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210121110122 is a deficient number, since it is larger than the sum of its proper divisors (182832654550).

210121110122 is a wasteful number, since it uses less digits than its factorization.

210121110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364422813.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210121110122 its reverse (221011121012), we get a palindrome (431132231134).

The spelling of 210121110122 in words is "two hundred ten billion, one hundred twenty-one million, one hundred ten thousand, one hundred twenty-two".