221001102211323 has 16 divisors (see below), whose sum is σ = 336763984354560. Its totient is φ = 126286194108576.

The previous prime is 221001102211321. The next prime is 221001102211333. The reversal of 221001102211323 is 323112201100122.

It is not a de Polignac number, because 221001102211323 - 2¹ = 221001102211321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 221001102211323.

It is not an unprimeable number, because it can be changed into a prime (221001102211321) 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, 13266268 + ... + 24859526.

It is an arithmetic number, because the mean of its divisors is an integer number (21047749022160).

Almost surely, 2^{221001102211323} is an apocalyptic number.

221001102211323 is a deficient number, since it is larger than the sum of its proper divisors (115762882143237).

221001102211323 is a wasteful number, since it uses less digits than its factorization.

221001102211323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12501026.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 221001102211323 its reverse (323112201100122), we get a palindrome (544113303311445).

The spelling of 221001102211323 in words is "two hundred twenty-one trillion, one billion, one hundred two million, two hundred eleven thousand, three hundred twenty-three".