202212222421 has 32 divisors (see below), whose sum is σ = 235600265088. Its totient is φ = 171518730240.

The previous prime is 202212222413. The next prime is 202212222451. The reversal of 202212222421 is 124222212202.

It is not a de Polignac number, because 202212222421 - 2³ = 202212222413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202212222392 and 202212222401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202212222451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11411050 + ... + 11428756.

It is an arithmetic number, because the mean of its divisors is an integer number (7362508284).

Almost surely, 2^202212222421 is an apocalyptic number.

It is an amenable number.

202212222421 is a deficient number, since it is larger than the sum of its proper divisors (33388042667).

202212222421 is a wasteful number, since it uses less digits than its factorization.

202212222421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18261.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 202212222421 its reverse (124222212202), we get a palindrome (326434434623).

The spelling of 202212222421 in words is "two hundred two billion, two hundred twelve million, two hundred twenty-two thousand, four hundred twenty-one".