22150010660520 has 512 divisors, whose sum is σ = 73730713190400. Its totient is φ = 5298860851200.

The previous prime is 22150010660431. The next prime is 22150010660587. The reversal of 22150010660520 is 2506601005122.

It is a super-2 number, since 2×22150010660520² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1116365800 + ... + 1116385640.

It is an arithmetic number, because the mean of its divisors is an integer number (144005299200).

Almost surely, 2^{22150010660520} is an apocalyptic number.

22150010660520 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 22150010660520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36865356595200).

22150010660520 is an abundant number, since it is smaller than the sum of its proper divisors (51580702529880).

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

22150010660520 is a wasteful number, since it uses less digits than its factorization.

22150010660520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20169 (or 20165 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 22150010660520 its reverse (2506601005122), we get a palindrome (24656611665642).

The spelling of 22150010660520 in words is "twenty-two trillion, one hundred fifty billion, ten million, six hundred sixty thousand, five hundred twenty".