202212201222021 has 48 divisors (see below), whose sum is σ = 277475703503040. Its totient is φ = 130984012435200.

The previous prime is 202212201222007. The next prime is 202212201222023. The reversal of 202212201222021 is 120222102212202.

It is not a de Polignac number, because 202212201222021 - 2²¹ = 202212199124869 is a prime.

It is a super-2 number, since 2×202212201222021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202212201222023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 712784215 + ... + 713067851.

It is an arithmetic number, because the mean of its divisors is an integer number (5780743822980).

Almost surely, 2^{202212201222021} is an apocalyptic number.

It is an amenable number.

202212201222021 is a deficient number, since it is larger than the sum of its proper divisors (75263502281019).

202212201222021 is a wasteful number, since it uses less digits than its factorization.

202212201222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284514 (or 284467 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 202212201222021 its reverse (120222102212202), we get a palindrome (322434303434223).

The spelling of 202212201222021 in words is "two hundred two trillion, two hundred twelve billion, two hundred one million, two hundred twenty-two thousand, twenty-one".