2100211220122 has 48 divisors (see below), whose sum is σ = 3386757735360. Its totient is φ = 974034014976.

The previous prime is 2100211220057. The next prime is 2100211220227. The reversal of 2100211220122 is 2210221120012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2100211220096 and 2100211220105.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27704923 + ... + 27780625.

It is an arithmetic number, because the mean of its divisors is an integer number (70557452820).

Almost surely, 2^{2100211220122} is an apocalyptic number.

2100211220122 is a deficient number, since it is larger than the sum of its proper divisors (1286546515238).

2100211220122 is a wasteful number, since it uses less digits than its factorization.

2100211220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76007 (or 75934 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2100211220122 its reverse (2210221120012), we get a palindrome (4310432340134).

The spelling of 2100211220122 in words is "two trillion, one hundred billion, two hundred eleven million, two hundred twenty thousand, one hundred twenty-two".