22021606103500 has 96 divisors (see below), whose sum is σ = 49216788548928. Its totient is φ = 8603246937600.

The previous prime is 22021606103489. The next prime is 22021606103507. The reversal of 22021606103500 is 530160612022.

It is a super-2 number, since 2×22021606103500² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22021606103507) 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, 594950994 + ... + 594988006.

It is an arithmetic number, because the mean of its divisors is an integer number (512674880718).

Almost surely, 2^{22021606103500} is an apocalyptic number.

22021606103500 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 22021606103500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24608394274464).

22021606103500 is an abundant number, since it is smaller than the sum of its proper divisors (27195182445428).

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

22021606103500 is a wasteful number, since it uses less digits than its factorization.

22021606103500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64748 (or 64736 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 22021606103500 its reverse (530160612022), we get a palindrome (22551766715522).

The spelling of 22021606103500 in words is "twenty-two trillion, twenty-one billion, six hundred six million, one hundred three thousand, five hundred".