120021021193 has 2 divisors, whose sum is σ = 120021021194. Its totient is φ = 120021021192.

The previous prime is 120021021191. The next prime is 120021021247. The reversal of 120021021193 is 391120120021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87197365264 + 32823655929 = 295292^2 + 181173^2 .

It is a cyclic number.

It is not a de Polignac number, because 120021021193 - 2¹ = 120021021191 is a prime.

Together with 120021021191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (120021021191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010510596 + 60010510597.

It is an arithmetic number, because the mean of its divisors is an integer number (60010510597).

Almost surely, 2^120021021193 is an apocalyptic number.

It is an amenable number.

120021021193 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021021193 is an equidigital number, since it uses as much as digits as its factorization.

120021021193 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 22.

The spelling of 120021021193 in words is "one hundred twenty billion, twenty-one million, twenty-one thousand, one hundred ninety-three".