23001221401 has 4 divisors (see below), whose sum is σ = 23134176612. Its totient is φ = 22868266192.

The previous prime is 23001221371. The next prime is 23001221417. The reversal of 23001221401 is 10412210032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18202057225 + 4799164176 = 134915^2 + 69276^2 .

It is a cyclic number.

It is not a de Polignac number, because 23001221401 - 2⁹ = 23001220889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23001221431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66477346 + ... + 66477691.

It is an arithmetic number, because the mean of its divisors is an integer number (5783544153).

Almost surely, 2^23001221401 is an apocalyptic number.

It is an amenable number.

23001221401 is a deficient number, since it is larger than the sum of its proper divisors (132955211).

23001221401 is a wasteful number, since it uses less digits than its factorization.

23001221401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132955210.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 23001221401 its reverse (10412210032), we get a palindrome (33413431433).

The spelling of 23001221401 in words is "twenty-three billion, one million, two hundred twenty-one thousand, four hundred one".