21020212120010 has 64 divisors (see below), whose sum is σ = 40405373614080. Its totient is φ = 7855949687040.

The previous prime is 21020212120007. The next prime is 21020212120067. The reversal of 21020212120010 is 1002121202012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 413002124 + ... + 413053016.

It is an arithmetic number, because the mean of its divisors is an integer number (631333962720).

Almost surely, 2^{21020212120010} is an apocalyptic number.

21020212120010 is a deficient number, since it is larger than the sum of its proper divisors (19385161494070).

21020212120010 is a wasteful number, since it uses less digits than its factorization.

21020212120010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96903.

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

Adding to 21020212120010 its reverse (1002121202012), we get a palindrome (22022333322022).

The spelling of 21020212120010 in words is "twenty-one trillion, twenty billion, two hundred twelve million, one hundred twenty thousand, ten".