21202022012010 has 256 divisors, whose sum is σ = 59858128134144. Its totient is φ = 4706127608832.

The previous prime is 21202022011997. The next prime is 21202022012029. The reversal of 21202022012010 is 1021022020212.

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 127 ways as a sum of consecutive naturals, for example, 1456475652 + ... + 1456490208.

It is an arithmetic number, because the mean of its divisors is an integer number (233820813024).

Almost surely, 2^{21202022012010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21202022012010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29929064067072).

21202022012010 is an abundant number, since it is smaller than the sum of its proper divisors (38656106122134).

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

21202022012010 is a wasteful number, since it uses less digits than its factorization.

21202022012010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15957.

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

Adding to 21202022012010 its reverse (1021022020212), we get a palindrome (22223044032222).

The spelling of 21202022012010 in words is "twenty-one trillion, two hundred two billion, twenty-two million, twelve thousand, ten".