152204221421 has 8 divisors (see below), whose sum is σ = 174301957824. Its totient is φ = 130195054080.

The previous prime is 152204221369. The next prime is 152204221471. The reversal of 152204221421 is 124122402251.

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

It is a de Polignac number, because none of the positive numbers 2^k-152204221421 is a prime.

It is a super-2 number, since 2×152204221421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152204221471) 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, 22138580 + ... + 22145453.

It is an arithmetic number, because the mean of its divisors is an integer number (21787744728).

Almost surely, 2^152204221421 is an apocalyptic number.

It is an amenable number.

152204221421 is a deficient number, since it is larger than the sum of its proper divisors (22097736403).

152204221421 is an equidigital number, since it uses as much as digits as its factorization.

152204221421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44284531.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 152204221421 its reverse (124122402251), we get a palindrome (276326623672).

The spelling of 152204221421 in words is "one hundred fifty-two billion, two hundred four million, two hundred twenty-one thousand, four hundred twenty-one".