210120540349 has 2 divisors, whose sum is σ = 210120540350. Its totient is φ = 210120540348.

The previous prime is 210120540229. The next prime is 210120540367. The reversal of 210120540349 is 943045021012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203337864900 + 6782675449 = 450930^2 + 82357^2 .

It is a cyclic number.

It is not a de Polignac number, because 210120540349 - 2¹³ = 210120532157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210120540349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210120540449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060270174 + 105060270175.

It is an arithmetic number, because the mean of its divisors is an integer number (105060270175).

Almost surely, 2^210120540349 is an apocalyptic number.

It is an amenable number.

210120540349 is a deficient number, since it is larger than the sum of its proper divisors (1).

210120540349 is an equidigital number, since it uses as much as digits as its factorization.

210120540349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 210120540349 in words is "two hundred ten billion, one hundred twenty million, five hundred forty thousand, three hundred forty-nine".