20221121311223 has 12 divisors (see below), whose sum is σ = 23625247352040. Its totient is φ = 17256702394512.

The previous prime is 20221121311199. The next prime is 20221121311331. The reversal of 20221121311223 is 32211312112202.

It is not a de Polignac number, because 20221121311223 - 2⁶ = 20221121311159 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 (20221121311823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 901027961 + ... + 901050402.

It is an arithmetic number, because the mean of its divisors is an integer number (1968770612670).

Almost surely, 2^{20221121311223} is an apocalyptic number.

20221121311223 is a deficient number, since it is larger than the sum of its proper divisors (3404126040817).

20221121311223 is a wasteful number, since it uses less digits than its factorization.

20221121311223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802078606 (or 1802078599 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 20221121311223 its reverse (32211312112202), we get a palindrome (52432433423425).

The spelling of 20221121311223 in words is "twenty trillion, two hundred twenty-one billion, one hundred twenty-one million, three hundred eleven thousand, two hundred twenty-three".