22121020111222 has 16 divisors (see below), whose sum is σ = 33770731377600. Its totient is φ = 10864407456520.

The previous prime is 22121020111199. The next prime is 22121020111243. The reversal of 22121020111222 is 22211102012122.

It is a super-2 number, since 2×22121020111222² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22121020111222.

It is a congruent 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, 74301904 + ... + 74599027.

It is an arithmetic number, because the mean of its divisors is an integer number (2110670711100).

Almost surely, 2^{22121020111222} is an apocalyptic number.

22121020111222 is a deficient number, since it is larger than the sum of its proper divisors (11649711266378).

22121020111222 is a wasteful number, since it uses less digits than its factorization.

22121020111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148902251.

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

Adding to 22121020111222 its reverse (22211102012122), we get a palindrome (44332122123344).

The spelling of 22121020111222 in words is "twenty-two trillion, one hundred twenty-one billion, twenty million, one hundred eleven thousand, two hundred twenty-two".