100200021111 has 16 divisors (see below), whose sum is σ = 154898584320. Its totient is φ = 63895665240.

The previous prime is 100200021109. The next prime is 100200021139. The reversal of 100200021111 is 111120002001.

It is a happy number.

It is not a de Polignac number, because 100200021111 - 2¹ = 100200021109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100200021093 and 100200021102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100200021511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80675725 + ... + 80676966.

It is an arithmetic number, because the mean of its divisors is an integer number (9681161520).

Almost surely, 2^100200021111 is an apocalyptic number.

100200021111 is a deficient number, since it is larger than the sum of its proper divisors (54698563209).

100200021111 is a wasteful number, since it uses less digits than its factorization.

100200021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161352723 (or 161352717 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100200021111 its reverse (111120002001), we get a palindrome (211320023112).

The spelling of 100200021111 in words is "one hundred billion, two hundred million, twenty-one thousand, one hundred eleven".