22002212100 has 72 divisors (see below), whose sum is σ = 69446992608. Its totient is φ = 5333868800.

The previous prime is 22002212069. The next prime is 22002212129. The reversal of 22002212100 is 121220022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3330369 + ... + 3336968.

It is an arithmetic number, because the mean of its divisors is an integer number (964541564).

Almost surely, 2^22002212100 is an apocalyptic number.

22002212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22002212100 is an abundant number, since it is smaller than the sum of its proper divisors (47444780508).

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

22002212100 is a wasteful number, since it uses less digits than its factorization.

22002212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667365 (or 6667358 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22002212100 its reverse (121220022), we get a palindrome (22123432122).

The spelling of 22002212100 in words is "twenty-two billion, two million, two hundred twelve thousand, one hundred".