21202011002012 has 24 divisors (see below), whose sum is σ = 37255006706400. Its totient is φ = 10557799777856.

The previous prime is 21202011002009. The next prime is 21202011002069. The reversal of 21202011002012 is 21020011020212.

It is a congruent number.

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, 8440187 + ... + 10660242.

It is an arithmetic number, because the mean of its divisors is an integer number (1552291946100).

Almost surely, 2^{21202011002012} is an apocalyptic number.

It is an amenable number.

21202011002012 is a deficient number, since it is larger than the sum of its proper divisors (16052995704388).

21202011002012 is a wasteful number, since it uses less digits than its factorization.

21202011002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19101565 (or 19101563 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21202011002012 its reverse (21020011020212), we get a palindrome (42222022022224).

It can be divided in two parts, 2120201 and 1002012, that added together give a palindrome (3122213).

The spelling of 21202011002012 in words is "twenty-one trillion, two hundred two billion, eleven million, two thousand, twelve".