210202202121979 has 2 divisors, whose sum is σ = 210202202121980. Its totient is φ = 210202202121978.

The previous prime is 210202202121971. The next prime is 210202202122027. The reversal of 210202202121979 is 979121202202012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210202202121979 - 2³ = 210202202121971 is a prime.

It is a super-3 number, since 3×210202202121979³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (210202202121971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105101101060989 + 105101101060990.

It is an arithmetic number, because the mean of its divisors is an integer number (105101101060990).

Almost surely, 2^{210202202121979} is an apocalyptic number.

210202202121979 is a deficient number, since it is larger than the sum of its proper divisors (1).

210202202121979 is an equidigital number, since it uses as much as digits as its factorization.

210202202121979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 210202202121979 in words is "two hundred ten trillion, two hundred two billion, two hundred two million, one hundred twenty-one thousand, nine hundred seventy-nine".