15230121321 has 8 divisors (see below), whose sum is σ = 20592840384. Its totient is φ = 10010408240.

The previous prime is 15230121299. The next prime is 15230121329. The reversal of 15230121321 is 12312103251.

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

It is a cyclic number.

It is not a de Polignac number, because 15230121321 - 2¹⁴ = 15230104937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15230121329) 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, 35751246 + ... + 35751671.

It is an arithmetic number, because the mean of its divisors is an integer number (2574105048).

Almost surely, 2^15230121321 is an apocalyptic number.

It is an amenable number.

15230121321 is a deficient number, since it is larger than the sum of its proper divisors (5362719063).

15230121321 is an equidigital number, since it uses as much as digits as its factorization.

15230121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71502991.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 15230121321 its reverse (12312103251), we get a palindrome (27542224572).

The spelling of 15230121321 in words is "fifteen billion, two hundred thirty million, one hundred twenty-one thousand, three hundred twenty-one".