2101220402012 has 12 divisors (see below), whose sum is σ = 3677225823096. Its totient is φ = 1050584452560.

The previous prime is 2101220401997. The next prime is 2101220402033. The reversal of 2101220402012 is 2102040221012.

It is a congruent number.

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, 6252914 + ... + 6580377.

It is an arithmetic number, because the mean of its divisors is an integer number (306435485258).

Almost surely, 2^{2101220402012} is an apocalyptic number.

It is an amenable number.

2101220402012 is a deficient number, since it is larger than the sum of its proper divisors (1576005421084).

2101220402012 is a wasteful number, since it uses less digits than its factorization.

2101220402012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12874228 (or 12874226 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2101220402012 its reverse (2102040221012), we get a palindrome (4203260623024).

The spelling of 2101220402012 in words is "two trillion, one hundred one billion, two hundred twenty million, four hundred two thousand, twelve".