202121000022 has 32 divisors (see below), whose sum is σ = 411906021120. Its totient is φ = 66096557280.

The previous prime is 202120999991. The next prime is 202121000099. The reversal of 202121000022 is 220000121202.

It is a junction number, because it is equal to n+sod(n) for n = 202120999971 and 202121000007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4850697 + ... + 4892187.

It is an arithmetic number, because the mean of its divisors is an integer number (12872063160).

Almost surely, 2^202121000022 is an apocalyptic number.

202121000022 is an abundant number, since it is smaller than the sum of its proper divisors (209785021098).

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

202121000022 is a wasteful number, since it uses less digits than its factorization.

202121000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56868.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 202121000022 its reverse (220000121202), we get a palindrome (422121121224).

The spelling of 202121000022 in words is "two hundred two billion, one hundred twenty-one million, twenty-two", and thus it is an aban number.