22020444465 has 16 divisors (see below), whose sum is σ = 35982344448. Its totient is φ = 11494359296.

The previous prime is 22020444461. The next prime is 22020444487. The reversal of 22020444465 is 56444402022.

It is a cyclic number.

It is not a de Polignac number, because 22020444465 - 2² = 22020444461 is a prime.

It is a super-2 number, since 2×22020444465² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22020444461) 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, 15616632 + ... + 15618041.

It is an arithmetic number, because the mean of its divisors is an integer number (2248896528).

Almost surely, 2^22020444465 is an apocalyptic number.

It is an amenable number.

22020444465 is a deficient number, since it is larger than the sum of its proper divisors (13961899983).

22020444465 is a wasteful number, since it uses less digits than its factorization.

22020444465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31234728.

The product of its (nonzero) digits is 61440, while the sum is 33.

Adding to 22020444465 its reverse (56444402022), we get a palindrome (78464846487).

The spelling of 22020444465 in words is "twenty-two billion, twenty million, four hundred forty-four thousand, four hundred sixty-five".