22001012112122 has 16 divisors (see below), whose sum is σ = 34944233891112. Its totient is φ = 10352987850240.

The previous prime is 22001012112091. The next prime is 22001012112193. The reversal of 22001012112122 is 22121121010022.

It can be written as a sum of positive squares in 4 ways, for example, as 13403279780401 + 8597732331721 = 3661049^2 + 2932189^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 22001012112122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12593273 + ... + 14233500.

Almost surely, 2^{22001012112122} is an apocalyptic number.

22001012112122 is a deficient number, since it is larger than the sum of its proper divisors (12943221778990).

22001012112122 is a wasteful number, since it uses less digits than its factorization.

22001012112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26850913.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22001012112122 its reverse (22121121010022), we get a palindrome (44122133122144).

The spelling of 22001012112122 in words is "twenty-two trillion, one billion, twelve million, one hundred twelve thousand, one hundred twenty-two".