1121431404004 has 24 divisors (see below), whose sum is σ = 1970103473856. Its totient is φ = 558547572000.

The previous prime is 1121431404001. The next prime is 1121431404017. The reversal of 1121431404004 is 4004041341211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121431404004.

It is not an unprimeable number, because it can be changed into a prime (1121431404001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1205049 + ... + 1922239.

It is an arithmetic number, because the mean of its divisors is an integer number (82087644744).

Almost surely, 2^{1121431404004} is an apocalyptic number.

It is an amenable number.

1121431404004 is a deficient number, since it is larger than the sum of its proper divisors (848672069852).

1121431404004 is a wasteful number, since it uses less digits than its factorization.

1121431404004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718707 (or 718705 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1121431404004 its reverse (4004041341211), we get a palindrome (5125472745215).

The spelling of 1121431404004 in words is "one trillion, one hundred twenty-one billion, four hundred thirty-one million, four hundred four thousand, four".