21010022202 has 48 divisors (see below), whose sum is σ = 45537151968. Its totient is φ = 6459485760.

The previous prime is 21010022197. The next prime is 21010022213. The reversal of 21010022202 is 20222001012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1384677 + ... + 1399767.

It is an arithmetic number, because the mean of its divisors is an integer number (948690666).

Almost surely, 2^21010022202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21010022202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22768575984).

21010022202 is an abundant number, since it is smaller than the sum of its proper divisors (24527129766).

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

21010022202 is a wasteful number, since it uses less digits than its factorization.

21010022202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16495 (or 16482 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21010022202 its reverse (20222001012), we get a palindrome (41232023214).

The spelling of 21010022202 in words is "twenty-one billion, ten million, twenty-two thousand, two hundred two".