22012906690945 has 16 divisors (see below), whose sum is σ = 26607533519808. Its totient is φ = 17482715490240.

The previous prime is 22012906690919. The next prime is 22012906690949. The reversal of 22012906690945 is 54909660921022.

It is not a de Polignac number, because 22012906690945 - 2⁹ = 22012906690433 is a prime.

It is a super-2 number, since 2×22012906690945² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012906690949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25859899 + ... + 26697568.

It is an arithmetic number, because the mean of its divisors is an integer number (1662970844988).

Almost surely, 2^{22012906690945} is an apocalyptic number.

It is an amenable number.

22012906690945 is a deficient number, since it is larger than the sum of its proper divisors (4594626828863).

22012906690945 is a wasteful number, since it uses less digits than its factorization.

22012906690945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52558080.

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 22012906690945 in words is "twenty-two trillion, twelve billion, nine hundred six million, six hundred ninety thousand, nine hundred forty-five".