202100212221020 has 96 divisors (see below), whose sum is σ = 458866763389440. Its totient is φ = 74580460148480.

The previous prime is 202100212221013. The next prime is 202100212221101. The reversal of 202100212221020 is 20122212001202.

It is a happy number.

It is a super-2 number, since 2×202100212221020² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202100212221020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68812346 + ... + 71689185.

It is an arithmetic number, because the mean of its divisors is an integer number (4779862118640).

Almost surely, 2^{202100212221020} is an apocalyptic number.

202100212221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202100212221020 is an abundant number, since it is smaller than the sum of its proper divisors (256766551168420).

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

202100212221020 is a wasteful number, since it uses less digits than its factorization.

202100212221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140501675 (or 140501673 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202100212221020 its reverse (20122212001202), we get a palindrome (222222424222222).

The spelling of 202100212221020 in words is "two hundred two trillion, one hundred billion, two hundred twelve million, two hundred twenty-one thousand, twenty".