20423422233 has 12 divisors (see below), whose sum is σ = 29615290068. Its totient is φ = 13562634240.

The previous prime is 20423422223. The next prime is 20423422267. The reversal of 20423422233 is 33222432402.

It is a happy number.

20423422233 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 3 + 422 + 233 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19648189584 + 775232649 = 140172^2 + 27843^2 .

It is not a de Polignac number, because 20423422233 - 2¹² = 20423418137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20423422197 and 20423422206.

It is not an unprimeable number, because it can be changed into a prime (20423422213) 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, 4412608 + ... + 4417233.

It is an arithmetic number, because the mean of its divisors is an integer number (2467940839).

Almost surely, 2^20423422233 is an apocalyptic number.

It is an amenable number.

20423422233 is a deficient number, since it is larger than the sum of its proper divisors (9191867835).

20423422233 is a wasteful number, since it uses less digits than its factorization.

20423422233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8830104 (or 8830101 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20423422233 its reverse (33222432402), we get a palindrome (53645854635).

The spelling of 20423422233 in words is "twenty billion, four hundred twenty-three million, four hundred twenty-two thousand, two hundred thirty-three".