21022202221210 has 32 divisors (see below), whose sum is σ = 37993159657152. Its totient is φ = 8374841712000.

The previous prime is 21022202221199. The next prime is 21022202221231. The reversal of 21022202221210 is 1212220222012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40042269 + ... + 40563871.

It is an arithmetic number, because the mean of its divisors is an integer number (1187286239286).

Almost surely, 2^{21022202221210} is an apocalyptic number.

21022202221210 is a deficient number, since it is larger than the sum of its proper divisors (16970957435942).

21022202221210 is a wasteful number, since it uses less digits than its factorization.

21022202221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537918.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21022202221210 its reverse (1212220222012), we get a palindrome (22234422443222).

The spelling of 21022202221210 in words is "twenty-one trillion, twenty-two billion, two hundred two million, two hundred twenty-one thousand, two hundred ten".