23022121211 has 4 divisors (see below), whose sum is σ = 23022941424. Its totient is φ = 23021301000.

The previous prime is 23022121127. The next prime is 23022121219. The reversal of 23022121211 is 11212122032.

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 23022121211 - 2²² = 23017926907 is a prime.

It is a super-2 number, since 2×23022121211² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23022121211.

It is not an unprimeable number, because it can be changed into a prime (23022121219) 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, 366455 + ... + 424656.

It is an arithmetic number, because the mean of its divisors is an integer number (5755735356).

Almost surely, 2^23022121211 is an apocalyptic number.

23022121211 is a deficient number, since it is larger than the sum of its proper divisors (820213).

23022121211 is an equidigital number, since it uses as much as digits as its factorization.

23022121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820212.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 23022121211 its reverse (11212122032), we get a palindrome (34234243243).

The spelling of 23022121211 in words is "twenty-three billion, twenty-two million, one hundred twenty-one thousand, two hundred eleven".