221002110122111 has 4 divisors (see below), whose sum is σ = 221009202874800. Its totient is φ = 220995017369424.

The previous prime is 221002110122077. The next prime is 221002110122159. The reversal of 221002110122111 is 111221011200122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221002110122111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221002110122111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002110152111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3546329606 + ... + 3546391923.

It is an arithmetic number, because the mean of its divisors is an integer number (55252300718700).

Almost surely, 2^{221002110122111} is an apocalyptic number.

221002110122111 is a deficient number, since it is larger than the sum of its proper divisors (7092752689).

221002110122111 is an equidigital number, since it uses as much as digits as its factorization.

221002110122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7092752688.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221002110122111 its reverse (111221011200122), we get a palindrome (332223121322233).

The spelling of 221002110122111 in words is "two hundred twenty-one trillion, two billion, one hundred ten million, one hundred twenty-two thousand, one hundred eleven".