22212423100 has 144 divisors (see below), whose sum is σ = 58138501120. Its totient is φ = 7195910400.

The previous prime is 22212423061. The next prime is 22212423113. The reversal of 22212423100 is 132421222.

It is a super-2 number, since 2×22212423100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5597317 + ... + 5601283.

Almost surely, 2^22212423100 is an apocalyptic number.

22212423100 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 22212423100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29069250560).

22212423100 is an abundant number, since it is smaller than the sum of its proper divisors (35926078020).

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

22212423100 is a wasteful number, since it uses less digits than its factorization.

22212423100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4428 (or 4421 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22212423100 its reverse (132421222), we get a palindrome (22344844322).

The spelling of 22212423100 in words is "twenty-two billion, two hundred twelve million, four hundred twenty-three thousand, one hundred".