21022211122210 has 32 divisors (see below), whose sum is σ = 37856793566592. Its totient is φ = 8405148954240.

The previous prime is 21022211122201. The next prime is 21022211122223. The reversal of 21022211122210 is 1222111222012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217354582 + ... + 217451278.

It is an arithmetic number, because the mean of its divisors is an integer number (1183024798956).

Almost surely, 2^{21022211122210} is an apocalyptic number.

21022211122210 is a deficient number, since it is larger than the sum of its proper divisors (16834582444382).

21022211122210 is a wasteful number, since it uses less digits than its factorization.

21022211122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106138.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21022211122210 its reverse (1222111222012), we get a palindrome (22244322344222).

The spelling of 21022211122210 in words is "twenty-one trillion, twenty-two billion, two hundred eleven million, one hundred twenty-two thousand, two hundred ten".