221002109983 has 4 divisors (see below), whose sum is σ = 221218567528. Its totient is φ = 220785652440.

The previous prime is 221002109953. The next prime is 221002110053. The reversal of 221002109983 is 389901200122.

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-221002109983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002109953) 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, 108227241 + ... + 108229282.

It is an arithmetic number, because the mean of its divisors is an integer number (55304641882).

Almost surely, 2^221002109983 is an apocalyptic number.

221002109983 is a deficient number, since it is larger than the sum of its proper divisors (216457545).

221002109983 is a wasteful number, since it uses less digits than its factorization.

221002109983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216457544.

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 221002109983 in words is "two hundred twenty-one billion, two million, one hundred nine thousand, nine hundred eighty-three".