21020122001210 has 16 divisors (see below), whose sum is σ = 39827599581600. Its totient is φ = 7965519916176.

The previous prime is 21020122001143. The next prime is 21020122001237. The reversal of 21020122001210 is 1210022102012.

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, 55316110340 + ... + 55316110719.

It is an arithmetic number, because the mean of its divisors is an integer number (2489224973850).

Almost surely, 2^{21020122001210} is an apocalyptic number.

21020122001210 is a deficient number, since it is larger than the sum of its proper divisors (18807477580390).

21020122001210 is a wasteful number, since it uses less digits than its factorization.

21020122001210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110632221085.

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

Adding to 21020122001210 its reverse (1210022102012), we get a palindrome (22230144103222).

The spelling of 21020122001210 in words is "twenty-one trillion, twenty billion, one hundred twenty-two million, one thousand, two hundred ten".