21020202133012 has 12 divisors (see below), whose sum is σ = 37303457306976. Its totient is φ = 10362071473880.

The previous prime is 21020202132991. The next prime is 21020202133013. The reversal of 21020202133012 is 21033120202012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020202133013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37007397838 + ... + 37007398405.

It is an arithmetic number, because the mean of its divisors is an integer number (3108621442248).

Almost surely, 2^{21020202133012} is an apocalyptic number.

It is an amenable number.

21020202133012 is a deficient number, since it is larger than the sum of its proper divisors (16283255173964).

21020202133012 is a wasteful number, since it uses less digits than its factorization.

21020202133012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74014796318 (or 74014796316 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21020202133012 its reverse (21033120202012), we get a palindrome (42053322335024).

The spelling of 21020202133012 in words is "twenty-one trillion, twenty billion, two hundred two million, one hundred thirty-three thousand, twelve".