20221011121 has 4 divisors (see below), whose sum is σ = 20221332544. Its totient is φ = 20220689700.

The previous prime is 20221011119. The next prime is 20221011143. The reversal of 20221011121 is 12111012202.

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 20221011121 - 2¹ = 20221011119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221015121) 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, 31965 + ... + 203626.

It is an arithmetic number, because the mean of its divisors is an integer number (5055333136).

Almost surely, 2^20221011121 is an apocalyptic number.

It is an amenable number.

20221011121 is a deficient number, since it is larger than the sum of its proper divisors (321423).

20221011121 is an equidigital number, since it uses as much as digits as its factorization.

20221011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321422.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20221011121 its reverse (12111012202), we get a palindrome (32332023323).

The spelling of 20221011121 in words is "twenty billion, two hundred twenty-one million, eleven thousand, one hundred twenty-one".