20010222423 has 20 divisors (see below), whose sum is σ = 29902861648. Its totient is φ = 13335217920.

The previous prime is 20010222403. The next prime is 20010222431. The reversal of 20010222423 is 32422201002.

20010222423 is a `hidden beast` number, since 20 + 0 + 1 + 0 + 222 + 423 = 666.

It is not a de Polignac number, because 20010222423 - 2⁹ = 20010221911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010222396 and 20010222405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010222403) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 181815 + ... + 270327.

Almost surely, 2^20010222423 is an apocalyptic number.

20010222423 is a deficient number, since it is larger than the sum of its proper divisors (9892639225).

20010222423 is an equidigital number, since it uses as much as digits as its factorization.

20010222423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91316 (or 91307 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20010222423 its reverse (32422201002), we get a palindrome (52432423425).

The spelling of 20010222423 in words is "twenty billion, ten million, two hundred twenty-two thousand, four hundred twenty-three".