21220200122010 has 64 divisors (see below), whose sum is σ = 52685734279680. Its totient is φ = 5463477734400.

The previous prime is 21220200121997. The next prime is 21220200122021. The reversal of 21220200122010 is 1022100202212.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 46361634 + ... + 46817106.

It is an arithmetic number, because the mean of its divisors is an integer number (823214598120).

Almost surely, 2^{21220200122010} is an apocalyptic number.

21220200122010 is an abundant number, since it is smaller than the sum of its proper divisors (31465534157670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21220200122010 is a wasteful number, since it uses less digits than its factorization.

21220200122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509063.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21220200122010 its reverse (1022100202212), we get a palindrome (22242300324222).

The spelling of 21220200122010 in words is "twenty-one trillion, two hundred twenty billion, two hundred million, one hundred twenty-two thousand, ten".