20002220423 has 2 divisors, whose sum is σ = 20002220424. Its totient is φ = 20002220422.

The previous prime is 20002220389. The next prime is 20002220437. The reversal of 20002220423 is 32402220002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20002220423 - 2⁸ = 20002220167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002220453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001110211 + 10001110212.

It is an arithmetic number, because the mean of its divisors is an integer number (10001110212).

Almost surely, 2^20002220423 is an apocalyptic number.

20002220423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002220423 is an equidigital number, since it uses as much as digits as its factorization.

20002220423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 17.

Adding to 20002220423 its reverse (32402220002), we get a palindrome (52404440425).

The spelling of 20002220423 in words is "twenty billion, two million, two hundred twenty thousand, four hundred twenty-three".