100111021002100 has 72 divisors (see below), whose sum is σ = 218639441180160. Its totient is φ = 39786650267520.

The previous prime is 100111021002053. The next prime is 100111021002149. The reversal of 100111021002100 is 1200120111001.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239797341 + ... + 240214459.

It is an arithmetic number, because the mean of its divisors is an integer number (3036658905280).

Almost surely, 2^{100111021002100} is an apocalyptic number.

100111021002100 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 100111021002100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109319720590080).

100111021002100 is an abundant number, since it is smaller than the sum of its proper divisors (118528420178060).

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

100111021002100 is a wasteful number, since it uses less digits than its factorization.

100111021002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432577 (or 432570 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100111021002100 its reverse (1200120111001), we get a palindrome (101311141113101).

The spelling of 100111021002100 in words is "one hundred trillion, one hundred eleven billion, twenty-one million, two thousand, one hundred".