202122010100 has 36 divisors (see below), whose sum is σ = 447936788544. Its totient is φ = 79128614880.

The previous prime is 202122010087. The next prime is 202122010117. The reversal of 202122010100 is 1010221202.

It is a happy number.

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, 21497642 + ... + 21507041.

Almost surely, 2^202122010100 is an apocalyptic number.

202122010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202122010100 is an abundant number, since it is smaller than the sum of its proper divisors (245814778444).

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

202122010100 is a wasteful number, since it uses less digits than its factorization.

202122010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43004744 (or 43004737 counting only the distinct ones).

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

Adding to 202122010100 its reverse (1010221202), we get a palindrome (203132231302).

The spelling of 202122010100 in words is "two hundred two billion, one hundred twenty-two million, ten thousand, one hundred".