100021122221000 has 32 divisors (see below), whose sum is σ = 234049425999480. Its totient is φ = 40008448888000.

The previous prime is 100021122220961. The next prime is 100021122221003. The reversal of 100021122221000 is 122221120001.

It can be written as a sum of positive squares in 4 ways, for example, as 64737118299844 + 35284003921156 = 8045938^2 + 5940034^2 .

It is not an unprimeable number, because it can be changed into a prime (100021122221003) 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, 50010560111 + ... + 50010562110.

Almost surely, 2^{100021122221000} is an apocalyptic number.

100021122221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021122221000 is an abundant number, since it is smaller than the sum of its proper divisors (134028303778480).

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

100021122221000 is a wasteful number, since it uses less digits than its factorization.

100021122221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100021122242 (or 100021122228 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100021122221000 its reverse (122221120001), we get a palindrome (100143343341001).

The spelling of 100021122221000 in words is "one hundred trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand".