22535143015220 has 96 divisors (see below), whose sum is σ = 52623519129216. Its totient is φ = 8037029721600.

The previous prime is 22535143015207. The next prime is 22535143015223. The reversal of 22535143015220 is 2251034153522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22535143015223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2237114 + ... + 7076366.

It is an arithmetic number, because the mean of its divisors is an integer number (548161657596).

Almost surely, 2^{22535143015220} is an apocalyptic number.

22535143015220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22535143015220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26311759564608).

22535143015220 is an abundant number, since it is smaller than the sum of its proper divisors (30088376113996).

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

22535143015220 is a wasteful number, since it uses less digits than its factorization.

22535143015220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4839681 (or 4839679 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 22535143015220 its reverse (2251034153522), we get a palindrome (24786177168742).

The spelling of 22535143015220 in words is "twenty-two trillion, five hundred thirty-five billion, one hundred forty-three million, fifteen thousand, two hundred twenty".