2121111112012 has 24 divisors (see below), whose sum is σ = 3907742529600. Its totient is φ = 1004625606096.

The previous prime is 2121111111953. The next prime is 2121111112051. The reversal of 2121111112012 is 2102111111212.

It is a super-2 number, since 2×2121111112012² (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 7 ways as a sum of consecutive naturals, for example, 851938 + ... + 2228905.

It is an arithmetic number, because the mean of its divisors is an integer number (162822605400).

Almost surely, 2^{2121111112012} is an apocalyptic number.

It is an amenable number.

2121111112012 is a deficient number, since it is larger than the sum of its proper divisors (1786631417588).

2121111112012 is a wasteful number, since it uses less digits than its factorization.

2121111112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089925 (or 3089923 counting only the distinct ones).

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

Adding to 2121111112012 its reverse (2102111111212), we get a palindrome (4223222223224).

The spelling of 2121111112012 in words is "two trillion, one hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, twelve".