100021022121000 has 128 divisors (see below), whose sum is σ = 312155735673600. Its totient is φ = 26664567724800.

The previous prime is 100021022120977. The next prime is 100021022121049. The reversal of 100021022121000 is 121220120001.

It is a super-2 number, since 2×100021022121000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5575206 + ... + 15202794.

It is an arithmetic number, because the mean of its divisors is an integer number (2438716684950).

Almost surely, 2^{100021022121000} is an apocalyptic number.

100021022121000 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 100021022121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156077867836800).

100021022121000 is an abundant number, since it is smaller than the sum of its proper divisors (212134713552600).

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

100021022121000 is a wasteful number, since it uses less digits than its factorization.

100021022121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9631076 (or 9631062 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100021022121000 its reverse (121220120001), we get a palindrome (100142242241001).

The spelling of 100021022121000 in words is "one hundred trillion, twenty-one billion, twenty-two million, one hundred twenty-one thousand".