21100312212323 has 16 divisors (see below), whose sum is σ = 23562514945440. Its totient is φ = 18777789388800.

The previous prime is 21100312212307. The next prime is 21100312212347. The reversal of 21100312212323 is 32321221300112.

It is not a de Polignac number, because 21100312212323 - 2⁴ = 21100312212307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100312212823) 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, 62524658 + ... + 62861223.

It is an arithmetic number, because the mean of its divisors is an integer number (1472657184090).

Almost surely, 2^{21100312212323} is an apocalyptic number.

21100312212323 is a deficient number, since it is larger than the sum of its proper divisors (2462202733117).

21100312212323 is a wasteful number, since it uses less digits than its factorization.

21100312212323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125386438.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21100312212323 its reverse (32321221300112), we get a palindrome (53421533512435).

The spelling of 21100312212323 in words is "twenty-one trillion, one hundred billion, three hundred twelve million, two hundred twelve thousand, three hundred twenty-three".