221101019983 has 4 divisors (see below), whose sum is σ = 224215118928. Its totient is φ = 217986921040.

The previous prime is 221101019981. The next prime is 221101019989. The reversal of 221101019983 is 389910101122.

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

It is a cyclic number.

It is not a de Polignac number, because 221101019983 - 2¹ = 221101019981 is a prime.

It is a super-2 number, since 2×221101019983² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221101019981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1557049366 + ... + 1557049507.

It is an arithmetic number, because the mean of its divisors is an integer number (56053779732).

Almost surely, 2^221101019983 is an apocalyptic number.

221101019983 is a deficient number, since it is larger than the sum of its proper divisors (3114098945).

221101019983 is an equidigital number, since it uses as much as digits as its factorization.

221101019983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3114098944.

The product of its (nonzero) digits is 7776, while the sum is 37.

The spelling of 221101019983 in words is "two hundred twenty-one billion, one hundred one million, nineteen thousand, nine hundred eighty-three".