2101121010212 has 48 divisors (see below), whose sum is σ = 4347319119360. Its totient is φ = 869394943872.

The previous prime is 2101121010179. The next prime is 2101121010301. The reversal of 2101121010212 is 2120101211012.

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 36516938 + ... + 36574430.

It is an arithmetic number, because the mean of its divisors is an integer number (90569148320).

Almost surely, 2^{2101121010212} is an apocalyptic number.

It is an amenable number.

2101121010212 is an abundant number, since it is smaller than the sum of its proper divisors (2246198109148).

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

2101121010212 is a wasteful number, since it uses less digits than its factorization.

2101121010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102540 (or 102538 counting only the distinct ones).

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

Adding to 2101121010212 its reverse (2120101211012), we get a palindrome (4221222221224).

The spelling of 2101121010212 in words is "two trillion, one hundred one billion, one hundred twenty-one million, ten thousand, two hundred twelve".