100013220000 has 360 divisors, whose sum is σ = 365031743076. Its totient is φ = 25947648000.

The previous prime is 100013219983. The next prime is 100013220017. The reversal of 100013220000 is 22310001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (100013219983) and next prime (100013220017).

It can be written as a sum of positive squares in 10 ways, for example, as 1896428304 + 98116791696 = 43548^2 + 313236^2 .

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 6652492 + ... + 6667508.

Almost surely, 2^100013220000 is an apocalyptic number.

100013220000 is a gapful number since it is divisible by the number (10) 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 100013220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182515871538).

100013220000 is an abundant number, since it is smaller than the sum of its proper divisors (265018523076).

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

100013220000 is a wasteful number, since it uses less digits than its factorization.

100013220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15090 (or 15064 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 100013220000 its reverse (22310001), we get a palindrome (100035530001).

Subtracting from 100013220000 its reverse (22310001), we obtain a palindrome (99990909999).

The spelling of 100013220000 in words is "one hundred billion, thirteen million, two hundred twenty thousand".