202101011100 has 54 divisors (see below), whose sum is σ = 633474394280. Its totient is φ = 53893602720.

The previous prime is 202101011089. The next prime is 202101011171. The reversal of 202101011100 is 1110101202.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 112277440 + ... + 112279239.

Almost surely, 2^202101011100 is an apocalyptic number.

202101011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202101011100 is an abundant number, since it is smaller than the sum of its proper divisors (431373383180).

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

202101011100 is a wasteful number, since it uses less digits than its factorization.

202101011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224556699 (or 224556689 counting only the distinct ones).

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

Adding to 202101011100 its reverse (1110101202), we get a palindrome (203211112302).

The spelling of 202101011100 in words is "two hundred two billion, one hundred one million, eleven thousand, one hundred".