210300021293 has 2 divisors, whose sum is σ = 210300021294. Its totient is φ = 210300021292.

The previous prime is 210300021289. The next prime is 210300021359. The reversal of 210300021293 is 392120003012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144565727524 + 65734293769 = 380218^2 + 256387^2 .

It is a cyclic number.

It is not a de Polignac number, because 210300021293 - 2² = 210300021289 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210300023293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105150010646 + 105150010647.

It is an arithmetic number, because the mean of its divisors is an integer number (105150010647).

Almost surely, 2^210300021293 is an apocalyptic number.

It is an amenable number.

210300021293 is a deficient number, since it is larger than the sum of its proper divisors (1).

210300021293 is an equidigital number, since it uses as much as digits as its factorization.

210300021293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 210300021293 in words is "two hundred ten billion, three hundred million, twenty-one thousand, two hundred ninety-three".