22001220012023 has 4 divisors (see below), whose sum is σ = 25144251442320. Its totient is φ = 18858188581728.

The previous prime is 22001220011977. The next prime is 22001220012043. The reversal of 22001220012023 is 32021002210022.

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

It is a cyclic number.

It is not a de Polignac number, because 22001220012023 - 2⁸ = 22001220011767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001220011992 and 22001220012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001220012043) 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, 1571515715138 + ... + 1571515715151.

It is an arithmetic number, because the mean of its divisors is an integer number (6286062860580).

Almost surely, 2^{22001220012023} is an apocalyptic number.

22001220012023 is a deficient number, since it is larger than the sum of its proper divisors (3143031430297).

22001220012023 is an equidigital number, since it uses as much as digits as its factorization.

22001220012023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143031430296.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22001220012023 its reverse (32021002210022), we get a palindrome (54022222222045).

The spelling of 22001220012023 in words is "twenty-two trillion, one billion, two hundred twenty million, twelve thousand, twenty-three".