100021122202220 has 24 divisors (see below), whose sum is σ = 222399907015104. Its totient is φ = 37655010711296.

The previous prime is 100021122202189. The next prime is 100021122202223. The reversal of 100021122202220 is 22202221120001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (100021122202223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147089885252 + ... + 147089885931.

It is an arithmetic number, because the mean of its divisors is an integer number (9266662792296).

Almost surely, 2^{100021122202220} is an apocalyptic number.

100021122202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021122202220 is an abundant number, since it is smaller than the sum of its proper divisors (122378784812884).

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

100021122202220 is a wasteful number, since it uses less digits than its factorization.

100021122202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294179771209 (or 294179771207 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 100021122202220 its reverse (22202221120001), we get a palindrome (122223343322221).

The spelling of 100021122202220 in words is "one hundred trillion, twenty-one billion, one hundred twenty-two million, two hundred two thousand, two hundred twenty".