1321023022403 has 16 divisors (see below), whose sum is σ = 1514169807360. Its totient is φ = 1128984189696.

The previous prime is 1321023022357. The next prime is 1321023022471. The reversal of 1321023022403 is 3042203201231.

It is a cyclic number.

It is not a de Polignac number, because 1321023022403 - 2⁶ = 1321023022339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321023052403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32495576 + ... + 32536202.

It is an arithmetic number, because the mean of its divisors is an integer number (94635612960).

Almost surely, 2^{1321023022403} is an apocalyptic number.

1321023022403 is a deficient number, since it is larger than the sum of its proper divisors (193146784957).

1321023022403 is a wasteful number, since it uses less digits than its factorization.

1321023022403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54146.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1321023022403 its reverse (3042203201231), we get a palindrome (4363226223634).

The spelling of 1321023022403 in words is "one trillion, three hundred twenty-one billion, twenty-three million, twenty-two thousand, four hundred three".