23011221023013 has 4 divisors (see below), whose sum is σ = 30681628030688. Its totient is φ = 15340814015340.

The previous prime is 23011221023009. The next prime is 23011221023029. The reversal of 23011221023013 is 31032012211032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23011221023013 - 2² = 23011221023009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23011221027013) 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, 3835203503833 + ... + 3835203503838.

It is an arithmetic number, because the mean of its divisors is an integer number (7670407007672).

Almost surely, 2^{23011221023013} is an apocalyptic number.

It is an amenable number.

23011221023013 is a deficient number, since it is larger than the sum of its proper divisors (7670407007675).

23011221023013 is an equidigital number, since it uses as much as digits as its factorization.

23011221023013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670407007674.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 23011221023013 its reverse (31032012211032), we get a palindrome (54043233234045).

The spelling of 23011221023013 in words is "twenty-three trillion, eleven billion, two hundred twenty-one million, twenty-three thousand, thirteen".