20112222033 has 12 divisors (see below), whose sum is σ = 29122022020. Its totient is φ = 13375362816.

The previous prime is 20112222029. The next prime is 20112222077. The reversal of 20112222033 is 33022221102.

It can be written as a sum of positive squares in 2 ways, for example, as 11775071169 + 8337150864 = 108513^2 + 91308^2 .

It is not a de Polignac number, because 20112222033 - 2² = 20112222029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112221997 and 20112222015.

It is not an unprimeable number, because it can be changed into a prime (20112222083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2728216 + ... + 2735577.

Almost surely, 2^20112222033 is an apocalyptic number.

It is an amenable number.

20112222033 is a deficient number, since it is larger than the sum of its proper divisors (9009799987).

20112222033 is a wasteful number, since it uses less digits than its factorization.

20112222033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5464208 (or 5464205 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20112222033 its reverse (33022221102), we get a palindrome (53134443135).

The spelling of 20112222033 in words is "twenty billion, one hundred twelve million, two hundred twenty-two thousand, thirty-three".