221010231323 has 16 divisors (see below), whose sum is σ = 257259014400. Its totient is φ = 185950407456.

The previous prime is 221010231283. The next prime is 221010231329. The reversal of 221010231323 is 323132010122.

It is a cyclic number.

It is not a de Polignac number, because 221010231323 - 2¹⁴ = 221010214939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221010231295 and 221010231304.

It is not an unprimeable number, because it can be changed into a prime (221010231329) 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, 699848 + ... + 965301.

It is an arithmetic number, because the mean of its divisors is an integer number (16078688400).

Almost surely, 2^221010231323 is an apocalyptic number.

221010231323 is a deficient number, since it is larger than the sum of its proper divisors (36248783077).

221010231323 is a wasteful number, since it uses less digits than its factorization.

221010231323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665506.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 221010231323 its reverse (323132010122), we get a palindrome (544142241445).

The spelling of 221010231323 in words is "two hundred twenty-one billion, ten million, two hundred thirty-one thousand, three hundred twenty-three".