23003111021 has 8 divisors (see below), whose sum is σ = 25095417600. Its totient is φ = 20910990240.

The previous prime is 23003110981. The next prime is 23003111069. The reversal of 23003111021 is 12011130032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23003111021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23003110987 and 23003111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23002111021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394340 + ... + 448898.

It is an arithmetic number, because the mean of its divisors is an integer number (3136927200).

Almost surely, 2^23003111021 is an apocalyptic number.

It is an amenable number.

23003111021 is a deficient number, since it is larger than the sum of its proper divisors (2092306579).

23003111021 is a wasteful number, since it uses less digits than its factorization.

23003111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92899.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 23003111021 its reverse (12011130032), we get a palindrome (35014241053).

The spelling of 23003111021 in words is "twenty-three billion, three million, one hundred eleven thousand, twenty-one".