202212213021 has 32 divisors (see below), whose sum is σ = 368706033920. Its totient is φ = 106661385792.

The previous prime is 202212213013. The next prime is 202212213023. The reversal of 202212213021 is 120312212202.

It is not a de Polignac number, because 202212213021 - 2³ = 202212213013 is a prime.

It is a super-3 number, since 3×202212213021³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202212212985 and 202212213003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202212213023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41147770 + ... + 41152683.

It is an arithmetic number, because the mean of its divisors is an integer number (11522063560).

Almost surely, 2^202212213021 is an apocalyptic number.

202212213021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202212213021 is a deficient number, since it is larger than the sum of its proper divisors (166493820899).

202212213021 is a wasteful number, since it uses less digits than its factorization.

202212213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82300482 (or 82300476 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 202212213021 its reverse (120312212202), we get a palindrome (322524425223).

The spelling of 202212213021 in words is "two hundred two billion, two hundred twelve million, two hundred thirteen thousand, twenty-one".