23021321201 has 4 divisors (see below), whose sum is σ = 23140602852. Its totient is φ = 22902039552.

The previous prime is 23021321189. The next prime is 23021321243. The reversal of 23021321201 is 10212312032.

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 9964830976 + 13056490225 = 99824^2 + 114265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23021321201 is a prime.

It is a super-2 number, since 2×23021321201² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23021321201.

It is not an unprimeable number, because it can be changed into a prime (23021321501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59640536 + ... + 59640921.

It is an arithmetic number, because the mean of its divisors is an integer number (5785150713).

Almost surely, 2^23021321201 is an apocalyptic number.

It is an amenable number.

23021321201 is a deficient number, since it is larger than the sum of its proper divisors (119281651).

23021321201 is a wasteful number, since it uses less digits than its factorization.

23021321201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119281650.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23021321201 its reverse (10212312032), we get a palindrome (33233633233).

The spelling of 23021321201 in words is "twenty-three billion, twenty-one million, three hundred twenty-one thousand, two hundred one".