221001013304023 has 16 divisors (see below), whose sum is σ = 239382774243360. Its totient is φ = 203269500435456.

The previous prime is 221001013303943. The next prime is 221001013304087. The reversal of 221001013304023 is 320403310100122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221001013304023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221001013303985 and 221001013304003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221001013304923) 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, 816759265 + ... + 817029802.

It is an arithmetic number, because the mean of its divisors is an integer number (14961423390210).

Almost surely, 2^{221001013304023} is an apocalyptic number.

221001013304023 is a deficient number, since it is larger than the sum of its proper divisors (18381760939337).

221001013304023 is a wasteful number, since it uses less digits than its factorization.

221001013304023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633789266.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221001013304023 its reverse (320403310100122), we get a palindrome (541404323404145).

The spelling of 221001013304023 in words is "two hundred twenty-one trillion, one billion, thirteen million, three hundred four thousand, twenty-three".