2121111020012 has 12 divisors (see below), whose sum is σ = 3723803534136. Its totient is φ = 1057167153120.

The previous prime is 2121111019987. The next prime is 2121111020047. The reversal of 2121111020012 is 2100201111212.

It is a super-2 number, since 2×2121111020012² (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, 847087814 + ... + 847090317.

It is an arithmetic number, because the mean of its divisors is an integer number (310316961178).

Almost surely, 2^{2121111020012} is an apocalyptic number.

It is an amenable number.

2121111020012 is a deficient number, since it is larger than the sum of its proper divisors (1602692514124).

2121111020012 is a wasteful number, since it uses less digits than its factorization.

2121111020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694178448 (or 1694178446 counting only the distinct ones).

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

Adding to 2121111020012 its reverse (2100201111212), we get a palindrome (4221312131224).

The spelling of 2121111020012 in words is "two trillion, one hundred twenty-one billion, one hundred eleven million, twenty thousand, twelve".