1231022111444 has 12 divisors (see below), whose sum is σ = 2154630744000. Its totient is φ = 615413327448.

The previous prime is 1231022111419. The next prime is 1231022111479. The reversal of 1231022111444 is 4441112201321.

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, 24403724 + ... + 24454115.

It is an arithmetic number, because the mean of its divisors is an integer number (179552562000).

Almost surely, 2^{1231022111444} is an apocalyptic number.

It is an amenable number.

1231022111444 is a deficient number, since it is larger than the sum of its proper divisors (923608632556).

1231022111444 is a wasteful number, since it uses less digits than its factorization.

1231022111444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48864142 (or 48864140 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 1231022111444 its reverse (4441112201321), we get a palindrome (5672134312765).

The spelling of 1231022111444 in words is "one trillion, two hundred thirty-one billion, twenty-two million, one hundred eleven thousand, four hundred forty-four".