1231121041444 has 12 divisors (see below), whose sum is σ = 2462242082944. Its totient is φ = 527623303464.

The previous prime is 1231121041441. The next prime is 1231121041477. The reversal of 1231121041444 is 4441401211321.

It is a happy number.

1231121041444 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 43968608623 = 1231121041444 / (1 + 2 + 3 + 1 + 1 + 2 + 1 + 0 + 4 + 1 + 4 + 4 + 4).

It is not an unprimeable number, because it can be changed into a prime (1231121041441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21984304284 + ... + 21984304339.

Almost surely, 2^{1231121041444} is an apocalyptic number.

1231121041444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1231121041444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231121041444 is a wasteful number, since it uses less digits than its factorization.

1231121041444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43968608634 (or 43968608632 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 1231121041444 its reverse (4441401211321), we get a palindrome (5672522252765).

The spelling of 1231121041444 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-one million, forty-one thousand, four hundred forty-four".