22144154104520 has 32 divisors (see below), whose sum is σ = 56942110555200. Its totient is φ = 7592281407168.

The previous prime is 22144154104441. The next prime is 22144154104609. The reversal of 22144154104520 is 2540145144122.

It is a happy number.

It is a super-2 number, since 2×22144154104520² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39543132050 + ... + 39543132609.

It is an arithmetic number, because the mean of its divisors is an integer number (1779440954850).

Almost surely, 2^{22144154104520} is an apocalyptic number.

22144154104520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22144154104520 is an abundant number, since it is smaller than the sum of its proper divisors (34797956450680).

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

22144154104520 is a wasteful number, since it uses less digits than its factorization.

22144154104520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79086264677 (or 79086264673 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 35.

Adding to 22144154104520 its reverse (2540145144122), we get a palindrome (24684299248642).

The spelling of 22144154104520 in words is "twenty-two trillion, one hundred forty-four billion, one hundred fifty-four million, one hundred four thousand, five hundred twenty".