1231220222333 has 4 divisors (see below), whose sum is σ = 1231222631520. Its totient is φ = 1231217813148.

The previous prime is 1231220222317. The next prime is 1231220222347. The reversal of 1231220222333 is 3332220221321.

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 1231220222333 - 2⁴ = 1231220222317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231220222383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100985 + ... + 1572462.

It is an arithmetic number, because the mean of its divisors is an integer number (307805657880).

Almost surely, 2^{1231220222333} is an apocalyptic number.

It is an amenable number.

1231220222333 is a deficient number, since it is larger than the sum of its proper divisors (2409187).

1231220222333 is an equidigital number, since it uses as much as digits as its factorization.

1231220222333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409186.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 1231220222333 its reverse (3332220221321), we get a palindrome (4563440443654).

The spelling of 1231220222333 in words is "one trillion, two hundred thirty-one billion, two hundred twenty million, two hundred twenty-two thousand, three hundred thirty-three".