202201210100 has 36 divisors (see below), whose sum is σ = 438997217484. Its totient is φ = 80839822080.

The previous prime is 202201210097. The next prime is 202201210147. The reversal of 202201210100 is 1012102202.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 6345396964 + 195855813136 = 79658^2 + 442556^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307979 + ... + 706578.

Almost surely, 2^202201210100 is an apocalyptic number.

202201210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202201210100 is an abundant number, since it is smaller than the sum of its proper divisors (236796007384).

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

202201210100 is a wasteful number, since it uses less digits than its factorization.

202201210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016564 (or 1016557 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 202201210100 its reverse (1012102202), we get a palindrome (203213312302).

The spelling of 202201210100 in words is "two hundred two billion, two hundred one million, two hundred ten thousand, one hundred".