23121102011 has 8 divisors (see below), whose sum is σ = 26434335744. Its totient is φ = 19810423080.

The previous prime is 23121101989. The next prime is 23121102029. The reversal of 23121102011 is 11020112132.

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

It is not a de Polignac number, because 23121102011 - 2⁶ = 23121101947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23121102041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619265 + ... + 655538.

It is an arithmetic number, because the mean of its divisors is an integer number (3304291968).

Almost surely, 2^23121102011 is an apocalyptic number.

23121102011 is a deficient number, since it is larger than the sum of its proper divisors (3313233733).

23121102011 is a wasteful number, since it uses less digits than its factorization.

23121102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277401.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 23121102011 its reverse (11020112132), we get a palindrome (34141214143).

The spelling of 23121102011 in words is "twenty-three billion, one hundred twenty-one million, one hundred two thousand, eleven".