23001221403 has 16 divisors (see below), whose sum is σ = 34081338240. Its totient is φ = 15331693032.

The previous prime is 23001221371. The next prime is 23001221417. The reversal of 23001221403 is 30412210032.

23001221403 is a `hidden beast` number, since 230 + 0 + 12 + 21 + 403 = 666.

It is not a de Polignac number, because 23001221403 - 2⁵ = 23001221371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23001221003) 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, 112300 + ... + 242102.

It is an arithmetic number, because the mean of its divisors is an integer number (2130083640).

Almost surely, 2^23001221403 is an apocalyptic number.

23001221403 is a deficient number, since it is larger than the sum of its proper divisors (11080116837).

23001221403 is a wasteful number, since it uses less digits than its factorization.

23001221403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136375 (or 136369 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23001221403 its reverse (30412210032), we get a palindrome (53413431435).

The spelling of 23001221403 in words is "twenty-three billion, one million, two hundred twenty-one thousand, four hundred three".