22016445441621 has 32 divisors (see below), whose sum is σ = 30609277194240. Its totient is φ = 14058700217856.

The previous prime is 22016445441589. The next prime is 22016445441623. The reversal of 22016445441621 is 12614454461022.

It is a happy number.

It is not a de Polignac number, because 22016445441621 - 2⁵ = 22016445441589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22016445441623) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 137336305 + ... + 137496521.

It is an arithmetic number, because the mean of its divisors is an integer number (956539912320).

Almost surely, 2^{22016445441621} is an apocalyptic number.

It is an amenable number.

22016445441621 is a deficient number, since it is larger than the sum of its proper divisors (8592831752619).

22016445441621 is a wasteful number, since it uses less digits than its factorization.

22016445441621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172813.

The product of its (nonzero) digits is 368640, while the sum is 42.

The spelling of 22016445441621 in words is "twenty-two trillion, sixteen billion, four hundred forty-five million, four hundred forty-one thousand, six hundred twenty-one".