23121101986 has 8 divisors (see below), whose sum is σ = 34988570604. Its totient is φ = 11458245120.

The previous prime is 23121101959. The next prime is 23121101989. The reversal of 23121101986 is 68910112132.

It can be written as a sum of positive squares in 2 ways, for example, as 15513948025 + 7607153961 = 124555^2 + 87219^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (23121101989) 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, 51152655 + ... + 51153106.

Almost surely, 2^23121101986 is an apocalyptic number.

23121101986 is a deficient number, since it is larger than the sum of its proper divisors (11867468618).

23121101986 is a wasteful number, since it uses less digits than its factorization.

23121101986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102305876.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 23121101986 in words is "twenty-three billion, one hundred twenty-one million, one hundred one thousand, nine hundred eighty-six".