22505111111450 has 48 divisors (see below), whose sum is σ = 45917208923040. Its totient is φ = 8138463048000.

The previous prime is 22505111111447. The next prime is 22505111111471. The reversal of 22505111111450 is 5411111150522.

It is a super-2 number, since 2×22505111111450² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112934660 + ... + 113133759.

It is an arithmetic number, because the mean of its divisors is an integer number (956608519230).

Almost surely, 2^{22505111111450} is an apocalyptic number.

22505111111450 is an abundant number, since it is smaller than the sum of its proper divisors (23412097811590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22505111111450 is a wasteful number, since it uses less digits than its factorization.

22505111111450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226068623 (or 226068618 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 29.

Adding to 22505111111450 its reverse (5411111150522), we get a palindrome (27916222261972).

The spelling of 22505111111450 in words is "twenty-two trillion, five hundred five billion, one hundred eleven million, one hundred eleven thousand, four hundred fifty".