202121100022 has 16 divisors (see below), whose sum is σ = 317481373440. Its totient is φ = 96325028712.

The previous prime is 202121100011. The next prime is 202121100053. The reversal of 202121100022 is 220001121202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202121099975 and 202121100011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7750122 + ... + 7776157.

It is an arithmetic number, because the mean of its divisors is an integer number (19842585840).

Almost surely, 2^202121100022 is an apocalyptic number.

202121100022 is a deficient number, since it is larger than the sum of its proper divisors (115360273418).

202121100022 is a wasteful number, since it uses less digits than its factorization.

202121100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15526587.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202121100022 its reverse (220001121202), we get a palindrome (422122221224).

The spelling of 202121100022 in words is "two hundred two billion, one hundred twenty-one million, one hundred thousand, twenty-two".