23211112154405 has 16 divisors (see below), whose sum is σ = 31832644187520. Its totient is φ = 15916060289472.

The previous prime is 23211112154393. The next prime is 23211112154407. The reversal of 23211112154405 is 50445121111232.

It is not a de Polignac number, because 23211112154405 - 2⁶ = 23211112154341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23211112154407) 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, 1690031 + ... + 7019859.

It is an arithmetic number, because the mean of its divisors is an integer number (1989540261720).

Almost surely, 2^{23211112154405} is an apocalyptic number.

It is an amenable number.

23211112154405 is a deficient number, since it is larger than the sum of its proper divisors (8621532033115).

23211112154405 is a wasteful number, since it uses less digits than its factorization.

23211112154405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5454268.

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 23211112154405 its reverse (50445121111232), we get a palindrome (73656233265637).

The spelling of 23211112154405 in words is "twenty-three trillion, two hundred eleven billion, one hundred twelve million, one hundred fifty-four thousand, four hundred five".