210220011121993 has 2 divisors, whose sum is σ = 210220011121994. Its totient is φ = 210220011121992.

The previous prime is 210220011121973. The next prime is 210220011122059. The reversal of 210220011121993 is 399121110022012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205625045895424 + 4594965226569 = 14339632^2 + 2143587^2 .

It is a cyclic number.

It is not a de Polignac number, because 210220011121993 - 2⁹ = 210220011121481 is a prime.

It is a super-2 number, since 2×210220011121993² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210220011121933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110005560996 + 105110005560997.

It is an arithmetic number, because the mean of its divisors is an integer number (105110005560997).

Almost surely, 2^{210220011121993} is an apocalyptic number.

It is an amenable number.

210220011121993 is a deficient number, since it is larger than the sum of its proper divisors (1).

210220011121993 is an equidigital number, since it uses as much as digits as its factorization.

210220011121993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 210220011121993 in words is "two hundred ten trillion, two hundred twenty billion, eleven million, one hundred twenty-one thousand, nine hundred ninety-three".