1223440141440 has 128 divisors (see below), whose sum is σ = 4254235110720. Its totient is φ = 296591544320.

The previous prime is 1223440141387. The next prime is 1223440141463. The reversal of 1223440141440 is 441410443221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1223440141398 and 1223440141407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28942899 + ... + 28985138.

Almost surely, 2^{1223440141440} is an apocalyptic number.

1223440141440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223440141440 is an abundant number, since it is smaller than the sum of its proper divisors (3030794969280).

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

1223440141440 is a wasteful number, since it uses less digits than its factorization.

1223440141440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57928070 (or 57928058 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 1223440141440 its reverse (441410443221), we get a palindrome (1664850584661).

The spelling of 1223440141440 in words is "one trillion, two hundred twenty-three billion, four hundred forty million, one hundred forty-one thousand, four hundred forty".