22121000222210 has 16 divisors (see below), whose sum is σ = 41913474105600. Its totient is φ = 8382694820976.

The previous prime is 22121000222173. The next prime is 22121000222273. The reversal of 22121000222210 is 1222200012122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58213158290 + ... + 58213158669.

It is an arithmetic number, because the mean of its divisors is an integer number (2619592131600).

Almost surely, 2^{22121000222210} is an apocalyptic number.

22121000222210 is a deficient number, since it is larger than the sum of its proper divisors (19792473883390).

22121000222210 is a wasteful number, since it uses less digits than its factorization.

22121000222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116426316985.

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

Adding to 22121000222210 its reverse (1222200012122), we get a palindrome (23343200234332).

The spelling of 22121000222210 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty-two thousand, two hundred ten".