221121011093 has 2 divisors, whose sum is σ = 221121011094. Its totient is φ = 221121011092.

The previous prime is 221121011087. The next prime is 221121011147. The reversal of 221121011093 is 390110121122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217362953284 + 3758057809 = 466222^2 + 61303^2 .

It is a cyclic number.

It is not a de Polignac number, because 221121011093 - 2¹⁴ = 221120994709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221121011003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560505546 + 110560505547.

It is an arithmetic number, because the mean of its divisors is an integer number (110560505547).

Almost surely, 2^221121011093 is an apocalyptic number.

It is an amenable number.

221121011093 is a deficient number, since it is larger than the sum of its proper divisors (1).

221121011093 is an equidigital number, since it uses as much as digits as its factorization.

221121011093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 221121011093 in words is "two hundred twenty-one billion, one hundred twenty-one million, eleven thousand, ninety-three".