23011221403 has 16 divisors (see below), whose sum is σ = 24725170080. Its totient is φ = 21337952256.

The previous prime is 23011221391. The next prime is 23011221413. The reversal of 23011221403 is 30412211032.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23011221403 - 2⁵ = 23011221371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23011221413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1202968 + ... + 1221946.

It is an arithmetic number, because the mean of its divisors is an integer number (1545323130).

Almost surely, 2^23011221403 is an apocalyptic number.

23011221403 is a deficient number, since it is larger than the sum of its proper divisors (1713948677).

23011221403 is a wasteful number, since it uses less digits than its factorization.

23011221403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20046.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 23011221403 its reverse (30412211032), we get a palindrome (53423432435).

The spelling of 23011221403 in words is "twenty-three billion, eleven million, two hundred twenty-one thousand, four hundred three".