21022200210 has 128 divisors (see below), whose sum is σ = 58451466240. Its totient is φ = 4785177600.

The previous prime is 21022200131. The next prime is 21022200223. The reversal of 21022200210 is 1200222012.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 693675 + ... + 723345.

It is an arithmetic number, because the mean of its divisors is an integer number (456652080).

Almost surely, 2^21022200210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21022200210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29225733120).

21022200210 is an abundant number, since it is smaller than the sum of its proper divisors (37429266030).

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

21022200210 is a wasteful number, since it uses less digits than its factorization.

21022200210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29824.

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

Adding to 21022200210 its reverse (1200222012), we get a palindrome (22222422222).

It can be divided in two parts, 210222002 and 10, that added together give a palindrome (210222012).

The spelling of 21022200210 in words is "twenty-one billion, twenty-two million, two hundred thousand, two hundred ten".