100100021021200 has 240 divisors, whose sum is σ = 252455746798080. Its totient is φ = 38092121948160.

The previous prime is 100100021021167. The next prime is 100100021021249. The reversal of 100100021021200 is 2120120001001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 255224449 + ... + 255616351.

It is an arithmetic number, because the mean of its divisors is an integer number (1051898944992).

Almost surely, 2^{100100021021200} is an apocalyptic number.

100100021021200 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 100100021021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126227873399040).

100100021021200 is an abundant number, since it is smaller than the sum of its proper divisors (152355725776880).

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

100100021021200 is a wasteful number, since it uses less digits than its factorization.

100100021021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392274 (or 392263 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100100021021200 its reverse (2120120001001), we get a palindrome (102220141022201).

The spelling of 100100021021200 in words is "one hundred trillion, one hundred billion, twenty-one million, twenty-one thousand, two hundred".