1321140120224 has 48 divisors (see below), whose sum is σ = 2633900645376. Its totient is φ = 652262284800.

The previous prime is 1321140120211. The next prime is 1321140120229. The reversal of 1321140120224 is 4220210411231.

It is a super-2 number, since 2×1321140120224² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1321140120224.

It is not an unprimeable number, because it can be changed into a prime (1321140120229) 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, 87164 + ... + 1627844.

It is an arithmetic number, because the mean of its divisors is an integer number (54872930112).

Almost surely, 2^{1321140120224} is an apocalyptic number.

It is an amenable number.

1321140120224 is a deficient number, since it is larger than the sum of its proper divisors (1312760525152).

1321140120224 is a wasteful number, since it uses less digits than its factorization.

1321140120224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541029 (or 1541021 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1321140120224 its reverse (4220210411231), we get a palindrome (5541350531455).

The spelling of 1321140120224 in words is "one trillion, three hundred twenty-one billion, one hundred forty million, one hundred twenty thousand, two hundred twenty-four".