1231420251224 has 16 divisors (see below), whose sum is σ = 2311963065600. Its totient is φ = 614896767072.

The previous prime is 1231420251209. The next prime is 1231420251233. The reversal of 1231420251224 is 4221520241321.

It is a congruent number.

It is an unprimeable number.

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, 101663384 + ... + 101675495.

It is an arithmetic number, because the mean of its divisors is an integer number (144497691600).

Almost surely, 2^{1231420251224} is an apocalyptic number.

It is an amenable number.

1231420251224 is a deficient number, since it is larger than the sum of its proper divisors (1080542814376).

1231420251224 is a wasteful number, since it uses less digits than its factorization.

1231420251224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203339642 (or 203339638 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 1231420251224 its reverse (4221520241321), we get a palindrome (5452940492545).

The spelling of 1231420251224 in words is "one trillion, two hundred thirty-one billion, four hundred twenty million, two hundred fifty-one thousand, two hundred twenty-four".