210202020211123 has 2 divisors, whose sum is σ = 210202020211124. Its totient is φ = 210202020211122.

The previous prime is 210202020211093. The next prime is 210202020211177. The reversal of 210202020211123 is 321112020202012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210202020211123 - 2⁵ = 210202020211091 is a prime.

It is a super-2 number, since 2×210202020211123² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210202020211123.

It is not a weakly prime, because it can be changed into another prime (210202020211223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105101010105561 + 105101010105562.

It is an arithmetic number, because the mean of its divisors is an integer number (105101010105562).

Almost surely, 2^{210202020211123} is an apocalyptic number.

210202020211123 is a deficient number, since it is larger than the sum of its proper divisors (1).

210202020211123 is an equidigital number, since it uses as much as digits as its factorization.

210202020211123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 210202020211123 its reverse (321112020202012), we get a palindrome (531314040413135).

The spelling of 210202020211123 in words is "two hundred ten trillion, two hundred two billion, twenty million, two hundred eleven thousand, one hundred twenty-three".