22154009900 has 72 divisors (see below), whose sum is σ = 52525648560. Its totient is φ = 8043552000.

The previous prime is 22154009897. The next prime is 22154009909. The reversal of 22154009900 is 990045122.

It is not an unprimeable number, because it can be changed into a prime (22154009909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 711866 + ... + 742334.

Almost surely, 2^22154009900 is an apocalyptic number.

22154009900 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 22154009900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26262824280).

22154009900 is an abundant number, since it is smaller than the sum of its proper divisors (30371638660).

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

22154009900 is a wasteful number, since it uses less digits than its factorization.

22154009900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31155 (or 31148 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 22154009900 in words is "twenty-two billion, one hundred fifty-four million, nine thousand, nine hundred".