100021222220000 has 120 divisors (see below), whose sum is σ = 246622688146296. Its totient is φ = 39918172736000.

The previous prime is 100021222219987. The next prime is 100021222220033. The reversal of 100021222220000 is 22222120001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3215462 + ... + 14504538.

Almost surely, 2^{100021222220000} is an apocalyptic number.

100021222220000 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 100021222220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123311344073148).

100021222220000 is an abundant number, since it is smaller than the sum of its proper divisors (146601465926296).

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

100021222220000 is an equidigital number, since it uses as much as digits as its factorization.

100021222220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11289550 (or 11289527 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 100021222220000 its reverse (22222120001), we get a palindrome (100043444340001).

Subtracting from 100021222220000 its reverse (22222120001), we obtain a palindrome (99999000099999).

The spelling of 100021222220000 in words is "one hundred trillion, twenty-one billion, two hundred twenty-two million, two hundred twenty thousand".