210022221101897 has 2 divisors, whose sum is σ = 210022221101898. Its totient is φ = 210022221101896.

The previous prime is 210022221101893. The next prime is 210022221102019. The reversal of 210022221101897 is 798101122220012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152697697982281 + 57324523119616 = 12357091^2 + 7571296^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022221101897 - 2² = 210022221101893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210022221101897.

It is not a weakly prime, because it can be changed into another prime (210022221101893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011110550948 + 105011110550949.

It is an arithmetic number, because the mean of its divisors is an integer number (105011110550949).

Almost surely, 2^{210022221101897} is an apocalyptic number.

It is an amenable number.

210022221101897 is a deficient number, since it is larger than the sum of its proper divisors (1).

210022221101897 is an equidigital number, since it uses as much as digits as its factorization.

210022221101897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 38.

The spelling of 210022221101897 in words is "two hundred ten trillion, twenty-two billion, two hundred twenty-one million, one hundred one thousand, eight hundred ninety-seven".