2023022121221 has 4 divisors (see below), whose sum is σ = 2023161625632. Its totient is φ = 2022882616812.

The previous prime is 2023022121217. The next prime is 2023022121269. The reversal of 2023022121221 is 1221212203202.

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 a cyclic number.

It is not a de Polignac number, because 2023022121221 - 2² = 2023022121217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2023022121193 and 2023022121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2023022121271) 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, 69730451 + ... + 69759456.

It is an arithmetic number, because the mean of its divisors is an integer number (505790406408).

Almost surely, 2^{2023022121221} is an apocalyptic number.

It is an amenable number.

2023022121221 is a deficient number, since it is larger than the sum of its proper divisors (139504411).

2023022121221 is a wasteful number, since it uses less digits than its factorization.

2023022121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139504410.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2023022121221 its reverse (1221212203202), we get a palindrome (3244234324423).

The spelling of 2023022121221 in words is "two trillion, twenty-three billion, twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".