210022021112261 has 2 divisors, whose sum is σ = 210022021112262. Its totient is φ = 210022021112260.

The previous prime is 210022021112243. The next prime is 210022021112327. The reversal of 210022021112261 is 162211120220012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151363562940100 + 58658458172161 = 12302990^2 + 7658881^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022021112261 - 2³⁸ = 209747143205317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210022021412261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011010556130 + 105011010556131.

It is an arithmetic number, because the mean of its divisors is an integer number (105011010556131).

Almost surely, 2^{210022021112261} is an apocalyptic number.

It is an amenable number.

210022021112261 is a deficient number, since it is larger than the sum of its proper divisors (1).

210022021112261 is an equidigital number, since it uses as much as digits as its factorization.

210022021112261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 210022021112261 its reverse (162211120220012), we get a palindrome (372233141332273).

The spelling of 210022021112261 in words is "two hundred ten trillion, twenty-two billion, twenty-one million, one hundred twelve thousand, two hundred sixty-one".