220121093 has 2 divisors, whose sum is σ = 220121094. Its totient is φ = 220121092.

The previous prime is 220121059. The next prime is 220121141. The reversal of 220121093 is 390121022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170093764 + 50027329 = 13042^2 + 7073^2 .

It is a cyclic number.

It is not a de Polignac number, because 220121093 - 2⁸ = 220120837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220121393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060546 + 110060547.

It is an arithmetic number, because the mean of its divisors is an integer number (110060547).

Almost surely, 2^220121093 is an apocalyptic number.

It is an amenable number.

220121093 is a deficient number, since it is larger than the sum of its proper divisors (1).

220121093 is an equidigital number, since it uses as much as digits as its factorization.

220121093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 220121093 is about 14836.4784568307. The cubic root of 220121093 is about 603.7918132920.

The spelling of 220121093 in words is "two hundred twenty million, one hundred twenty-one thousand, ninety-three".