1231233221404 has 12 divisors (see below), whose sum is σ = 2281402733904. Its totient is φ = 579403868864.

The previous prime is 1231233221363. The next prime is 1231233221437. The reversal of 1231233221404 is 4041223321321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9053185384 + ... + 9053185519.

It is an arithmetic number, because the mean of its divisors is an integer number (190116894492).

Almost surely, 2^{1231233221404} is an apocalyptic number.

It is an amenable number.

1231233221404 is a deficient number, since it is larger than the sum of its proper divisors (1050169512500).

1231233221404 is a wasteful number, since it uses less digits than its factorization.

1231233221404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18106370924 (or 18106370922 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1231233221404 its reverse (4041223321321), we get a palindrome (5272456542725).

The spelling of 1231233221404 in words is "one trillion, two hundred thirty-one billion, two hundred thirty-three million, two hundred twenty-one thousand, four hundred four".