21200200202012 has 48 divisors (see below), whose sum is σ = 40406205605472. Its totient is φ = 9674587392000.

The previous prime is 21200200202009. The next prime is 21200200202017. The reversal of 21200200202012 is 21020200200212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200200202017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4139933 + ... + 7716180.

It is an arithmetic number, because the mean of its divisors is an integer number (841795950114).

Almost surely, 2^{21200200202012} is an apocalyptic number.

It is an amenable number.

21200200202012 is a deficient number, since it is larger than the sum of its proper divisors (19206005403460).

21200200202012 is a wasteful number, since it uses less digits than its factorization.

21200200202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11856518 (or 11856516 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21200200202012 its reverse (21020200200212), we get a palindrome (42220400402224).

The spelling of 21200200202012 in words is "twenty-one trillion, two hundred billion, two hundred million, two hundred two thousand, twelve".