20333222261 has 4 divisors (see below), whose sum is σ = 22181697024. Its totient is φ = 18484747500.

The previous prime is 20333222257. The next prime is 20333222263. The reversal of 20333222261 is 16222233302.

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 20333222261 - 2² = 20333222257 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 20333222261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20333222263) 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, 924237365 + ... + 924237386.

It is an arithmetic number, because the mean of its divisors is an integer number (5545424256).

Almost surely, 2^20333222261 is an apocalyptic number.

It is an amenable number.

20333222261 is a deficient number, since it is larger than the sum of its proper divisors (1848474763).

20333222261 is a wasteful number, since it uses less digits than its factorization.

20333222261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848474762.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 20333222261 its reverse (16222233302), we get a palindrome (36555455563).

The spelling of 20333222261 in words is "twenty billion, three hundred thirty-three million, two hundred twenty-two thousand, two hundred sixty-one".