22101553500 has 192 divisors, whose sum is σ = 70192711680. Its totient is φ = 5371142400.

The previous prime is 22101553469. The next prime is 22101553547. The reversal of 22101553500 is 535510122.

It is a happy number.

It is a super-2 number, since 2×22101553500² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1533327 + ... + 1547673.

It is an arithmetic number, because the mean of its divisors is an integer number (365587040).

Almost surely, 2^22101553500 is an apocalyptic number.

22101553500 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 22101553500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35096355840).

22101553500 is an abundant number, since it is smaller than the sum of its proper divisors (48091158180).

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

22101553500 is a wasteful number, since it uses less digits than its factorization.

22101553500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14461 (or 14449 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The spelling of 22101553500 in words is "twenty-two billion, one hundred one million, five hundred fifty-three thousand, five hundred".