20112212233 has 4 divisors (see below), whose sum is σ = 20121327360. Its totient is φ = 20103097108.

The previous prime is 20112212203. The next prime is 20112212251. The reversal of 20112212233 is 33221221102.

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 20112212233 - 2²⁹ = 19575341321 is a prime.

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 20112212233.

It is not an unprimeable number, because it can be changed into a prime (20112212203) 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, 4554253 + ... + 4558666.

It is an arithmetic number, because the mean of its divisors is an integer number (5030331840).

Almost surely, 2^20112212233 is an apocalyptic number.

It is an amenable number.

20112212233 is a deficient number, since it is larger than the sum of its proper divisors (9115127).

20112212233 is an equidigital number, since it uses as much as digits as its factorization.

20112212233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9115126.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20112212233 its reverse (33221221102), we get a palindrome (53333433335).

The spelling of 20112212233 in words is "twenty billion, one hundred twelve million, two hundred twelve thousand, two hundred thirty-three".