2100012121112 has 64 divisors (see below), whose sum is σ = 4076661083040. Its totient is φ = 1013457715200.

The previous prime is 2100012121093. The next prime is 2100012121133. The reversal of 2100012121112 is 2111212100012.

It is a super-2 number, since 2×2100012121112² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97568912 + ... + 97590432.

Almost surely, 2^{2100012121112} is an apocalyptic number.

It is an amenable number.

2100012121112 is a deficient number, since it is larger than the sum of its proper divisors (1976648961928).

2100012121112 is a wasteful number, since it uses less digits than its factorization.

2100012121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24732 (or 24728 counting only the distinct ones).

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

Adding to 2100012121112 its reverse (2111212100012), we get a palindrome (4211224221124).

The spelling of 2100012121112 in words is "two trillion, one hundred billion, twelve million, one hundred twenty-one thousand, one hundred twelve".