21022221022010 has 64 divisors (see below), whose sum is σ = 41853432499200. Its totient is φ = 7552032268032.

The previous prime is 21022221022007. The next prime is 21022221022021. The reversal of 21022221022010 is 1022012222012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21022221022010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258347711 + ... + 258429069.

It is an arithmetic number, because the mean of its divisors is an integer number (653959882800).

Almost surely, 2^{21022221022010} is an apocalyptic number.

21022221022010 is a deficient number, since it is larger than the sum of its proper divisors (20831211477190).

21022221022010 is a wasteful number, since it uses less digits than its factorization.

21022221022010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135135.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21022221022010 its reverse (1022012222012), we get a palindrome (22044233244022).

The spelling of 21022221022010 in words is "twenty-one trillion, twenty-two billion, two hundred twenty-one million, twenty-two thousand, ten".