22001001023 has 2 divisors, whose sum is σ = 22001001024. Its totient is φ = 22001001022.

The previous prime is 22001001019. The next prime is 22001001047. The reversal of 22001001023 is 32010010022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22001001023 - 2² = 22001001019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22001000995 and 22001001013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22001001073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000500511 + 11000500512.

It is an arithmetic number, because the mean of its divisors is an integer number (11000500512).

Almost surely, 2^22001001023 is an apocalyptic number.

22001001023 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001001023 is an equidigital number, since it uses as much as digits as its factorization.

22001001023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 22001001023 its reverse (32010010022), we get a palindrome (54011011045).

The spelling of 22001001023 in words is "twenty-two billion, one million, one thousand, twenty-three".