221312110023 has 24 divisors (see below), whose sum is σ = 328342174368. Its totient is φ = 143540983872.

The previous prime is 221312110003. The next prime is 221312110027. The reversal of 221312110023 is 320011213122.

221312110023 is a `hidden beast` number, since 221 + 312 + 110 + 0 + 23 = 666.

It is not a de Polignac number, because 221312110023 - 2¹⁰ = 221312108999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221312109978 and 221312110005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221312110027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4967161 + ... + 5011517.

It is an arithmetic number, because the mean of its divisors is an integer number (13680923932).

Almost surely, 2^221312110023 is an apocalyptic number.

221312110023 is a deficient number, since it is larger than the sum of its proper divisors (107030064345).

221312110023 is a wasteful number, since it uses less digits than its factorization.

221312110023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59383 (or 59380 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 221312110023 its reverse (320011213122), we get a palindrome (541323323145).

The spelling of 221312110023 in words is "two hundred twenty-one billion, three hundred twelve million, one hundred ten thousand, twenty-three".