1231220514404 has 24 divisors (see below), whose sum is σ = 2219382457656. Its totient is φ = 597277152000.

The previous prime is 1231220514373. The next prime is 1231220514451. The reversal of 1231220514404 is 4044150221321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17345416804 + 1213875097600 = 131702^2 + 1101760^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20709107 + ... + 20768474.

It is an arithmetic number, because the mean of its divisors is an integer number (92474269069).

Almost surely, 2^{1231220514404} is an apocalyptic number.

It is an amenable number.

1231220514404 is a deficient number, since it is larger than the sum of its proper divisors (988161943252).

1231220514404 is a wasteful number, since it uses less digits than its factorization.

1231220514404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41477807 (or 41477805 counting only the distinct ones).

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

Adding to 1231220514404 its reverse (4044150221321), we get a palindrome (5275370735725).

The spelling of 1231220514404 in words is "one trillion, two hundred thirty-one billion, two hundred twenty million, five hundred fourteen thousand, four hundred four".