2101122222210 has 48 divisors (see below), whose sum is σ = 5959546669440. Its totient is φ = 509362962720.

The previous prime is 2101122222203. The next prime is 2101122222211. The reversal of 2101122222210 is 122222211012.

It is a happy number.

2101122222210 is a `hidden beast` number, since 210 + 1 + 1 + 22 + 222 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2101122222211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1061171850 + ... + 1061173829.

It is an arithmetic number, because the mean of its divisors is an integer number (124157222280).

Almost surely, 2^{2101122222210} is an apocalyptic number.

2101122222210 is an abundant number, since it is smaller than the sum of its proper divisors (3858424447230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101122222210 is a wasteful number, since it uses less digits than its factorization.

2101122222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122345703 (or 2122345700 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2101122222210 its reverse (122222211012), we get a palindrome (2223344433222).

The spelling of 2101122222210 in words is "two trillion, one hundred one billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred ten".