1223320210993 has 4 divisors (see below), whose sum is σ = 1228396228708. Its totient is φ = 1218244193280.

The previous prime is 1223320210961. The next prime is 1223320211041. The reversal of 1223320210993 is 3990120233221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 775909054449 + 447411156544 = 880857^2 + 668888^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223320210993 - 2⁵ = 1223320210961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223320210493) 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, 2538008496 + ... + 2538008977.

It is an arithmetic number, because the mean of its divisors is an integer number (307099057177).

Almost surely, 2^{1223320210993} is an apocalyptic number.

It is an amenable number.

1223320210993 is a deficient number, since it is larger than the sum of its proper divisors (5076017715).

1223320210993 is an equidigital number, since it uses as much as digits as its factorization.

1223320210993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5076017714.

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 1223320210993 in words is "one trillion, two hundred twenty-three billion, three hundred twenty million, two hundred ten thousand, nine hundred ninety-three".