202421131989 has 8 divisors (see below), whose sum is σ = 273696178752. Its totient is φ = 133046753280.

The previous prime is 202421131931. The next prime is 202421132033. The reversal of 202421131989 is 989131124202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202421131989 - 2²⁰ = 202420083413 is a prime.

It is a super-2 number, since 2×202421131989² (a number of 23 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 202421131989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202421131909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475166764 + ... + 475167189.

It is an arithmetic number, because the mean of its divisors is an integer number (34212022344).

Almost surely, 2^202421131989 is an apocalyptic number.

It is an amenable number.

202421131989 is a deficient number, since it is larger than the sum of its proper divisors (71275046763).

202421131989 is an equidigital number, since it uses as much as digits as its factorization.

202421131989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950334027.

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 202421131989 in words is "two hundred two billion, four hundred twenty-one million, one hundred thirty-one thousand, nine hundred eighty-nine".