1230231032221 has 4 divisors (see below), whose sum is σ = 1230233335552. Its totient is φ = 1230228728892.

The previous prime is 1230231032203. The next prime is 1230231032263. The reversal of 1230231032221 is 1222301320321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1230231032221 - 2²¹ = 1230228935069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230231032192 and 1230231032201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230231032201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110830 + ... + 1572496.

It is an arithmetic number, because the mean of its divisors is an integer number (307558333888).

Almost surely, 2^{1230231032221} is an apocalyptic number.

It is an amenable number.

1230231032221 is a deficient number, since it is larger than the sum of its proper divisors (2303331).

1230231032221 is an equidigital number, since it uses as much as digits as its factorization.

1230231032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303330.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1230231032221 its reverse (1222301320321), we get a palindrome (2452532352542).

The spelling of 1230231032221 in words is "one trillion, two hundred thirty billion, two hundred thirty-one million, thirty-two thousand, two hundred twenty-one".