22121102012218 has 32 divisors (see below), whose sum is σ = 37371213347328. Its totient is φ = 9729293260800.

The previous prime is 22121102012033. The next prime is 22121102012231. The reversal of 22121102012218 is 81221020112122.

It is a junction number, because it is equal to n+sod(n) for n = 22121102012192 and 22121102012201.

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, 2433846 + ... + 7082782.

It is an arithmetic number, because the mean of its divisors is an integer number (1167850417104).

Almost surely, 2^{22121102012218} is an apocalyptic number.

22121102012218 is a deficient number, since it is larger than the sum of its proper divisors (15250111335110).

22121102012218 is a wasteful number, since it uses less digits than its factorization.

22121102012218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4655958.

The product of its (nonzero) digits is 512, while the sum is 25.

The spelling of 22121102012218 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred two million, twelve thousand, two hundred eighteen".