23203769221 has 4 divisors (see below), whose sum is σ = 23530582944. Its totient is φ = 22876955500.

The previous prime is 23203769219. The next prime is 23203769233. The reversal of 23203769221 is 12296730232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23203769221 - 2¹ = 23203769219 is a prime.

It is a super-2 number, since 2×23203769221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23203769291) 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, 163406755 + ... + 163406896.

It is an arithmetic number, because the mean of its divisors is an integer number (5882645736).

Almost surely, 2^23203769221 is an apocalyptic number.

It is an amenable number.

23203769221 is a deficient number, since it is larger than the sum of its proper divisors (326813723).

23203769221 is an equidigital number, since it uses as much as digits as its factorization.

23203769221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326813722.

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 23203769221 in words is "twenty-three billion, two hundred three million, seven hundred sixty-nine thousand, two hundred twenty-one".