2121021211012 has 12 divisors (see below), whose sum is σ = 4049222312016. Its totient is φ = 964100550440.

The previous prime is 2121021210989. The next prime is 2121021211039. The reversal of 2121021211012 is 2101121201212.

It is a super-2 number, since 2×2121021211012² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24102513718 + ... + 24102513805.

It is an arithmetic number, because the mean of its divisors is an integer number (337435192668).

Almost surely, 2^{2121021211012} is an apocalyptic number.

2121021211012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2121021211012 is a deficient number, since it is larger than the sum of its proper divisors (1928201101004).

2121021211012 is a wasteful number, since it uses less digits than its factorization.

2121021211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48205027538 (or 48205027536 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2121021211012 its reverse (2101121201212), we get a palindrome (4222142412224).

The spelling of 2121021211012 in words is "two trillion, one hundred twenty-one billion, twenty-one million, two hundred eleven thousand, twelve".