2131111020012 has 48 divisors (see below), whose sum is σ = 5428457042400. Its totient is φ = 646743909888.

The previous prime is 2131111020007. The next prime is 2131111020037. The reversal of 2131111020012 is 2100201111312.

It is a junction number, because it is equal to n+sod(n) for n = 2131111019973 and 2131111020000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93556887 + ... + 93579662.

It is an arithmetic number, because the mean of its divisors is an integer number (113092855050).

Almost surely, 2^{2131111020012} is an apocalyptic number.

It is an amenable number.

2131111020012 is an abundant number, since it is smaller than the sum of its proper divisors (3297346022388).

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

2131111020012 is a wasteful number, since it uses less digits than its factorization.

2131111020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187136642 (or 187136640 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 2131111020012 its reverse (2100201111312), we get a palindrome (4231312131324).

The spelling of 2131111020012 in words is "two trillion, one hundred thirty-one billion, one hundred eleven million, twenty thousand, twelve".