23102121211 has 16 divisors (see below), whose sum is σ = 25509895488. Its totient is φ = 20785420800.

The previous prime is 23102121209. The next prime is 23102121241. The reversal of 23102121211 is 11212120132.

It is a cyclic number.

It is not a de Polignac number, because 23102121211 - 2¹ = 23102121209 is a prime.

It is a super-2 number, since 2×23102121211² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23102121241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564946 + ... + 604456.

It is an arithmetic number, because the mean of its divisors is an integer number (1594368468).

Almost surely, 2^23102121211 is an apocalyptic number.

23102121211 is a deficient number, since it is larger than the sum of its proper divisors (2407774277).

23102121211 is a wasteful number, since it uses less digits than its factorization.

23102121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40662.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 23102121211 its reverse (11212120132), we get a palindrome (34314241343).

The spelling of 23102121211 in words is "twenty-three billion, one hundred two million, one hundred twenty-one thousand, two hundred eleven".