210120021122122 has 16 divisors (see below), whose sum is σ = 315852455070432. Its totient is φ = 104835910772880.

The previous prime is 210120021122021. The next prime is 210120021122129. The reversal of 210120021122122 is 221221120021012.

It is a self number, because there is not a number n which added to its sum of digits gives 210120021122122.

It is not an unprimeable number, because it can be changed into a prime (210120021122129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159228 + ... + 20500375.

It is an arithmetic number, because the mean of its divisors is an integer number (19740778441902).

Almost surely, 2^{210120021122122} is an apocalyptic number.

210120021122122 is a deficient number, since it is larger than the sum of its proper divisors (105732433948310).

210120021122122 is a wasteful number, since it uses less digits than its factorization.

210120021122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20670453.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210120021122122 its reverse (221221120021012), we get a palindrome (431341141143134).

The spelling of 210120021122122 in words is "two hundred ten trillion, one hundred twenty billion, twenty-one million, one hundred twenty-two thousand, one hundred twenty-two".