221221102183 has 2 divisors, whose sum is σ = 221221102184. Its totient is φ = 221221102182.

The previous prime is 221221102103. The next prime is 221221102237. The reversal of 221221102183 is 381201122122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221221102183 - 2³⁷ = 83782148711 is a prime.

It is a super-2 number, since 2×221221102183² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221221102103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110610551091 + 110610551092.

It is an arithmetic number, because the mean of its divisors is an integer number (110610551092).

Almost surely, 2^221221102183 is an apocalyptic number.

221221102183 is a deficient number, since it is larger than the sum of its proper divisors (1).

221221102183 is an equidigital number, since it uses as much as digits as its factorization.

221221102183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

The spelling of 221221102183 in words is "two hundred twenty-one billion, two hundred twenty-one million, one hundred two thousand, one hundred eighty-three".