202121200002220 has 48 divisors (see below), whose sum is σ = 430435266020928. Its totient is φ = 79709303582720.

The previous prime is 202121200002217. The next prime is 202121200002233. The reversal of 202121200002220 is 22200002121202.

It is a junction number, because it is equal to n+sod(n) for n = 202121200002194 and 202121200002203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342403644 + ... + 342993436.

It is an arithmetic number, because the mean of its divisors is an integer number (8967401375436).

Almost surely, 2^{202121200002220} is an apocalyptic number.

202121200002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202121200002220 is an abundant number, since it is smaller than the sum of its proper divisors (228314066018708).

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

202121200002220 is a wasteful number, since it uses less digits than its factorization.

202121200002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831210 (or 831208 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202121200002220 its reverse (22200002121202), we get a palindrome (224321202123422).

The spelling of 202121200002220 in words is "two hundred two trillion, one hundred twenty-one billion, two hundred million, two thousand, two hundred twenty".