1210220221099 has 2 divisors, whose sum is σ = 1210220221100. Its totient is φ = 1210220221098.

The previous prime is 1210220221097. The next prime is 1210220221187. The reversal of 1210220221099 is 9901220220121.

It is a weak prime.

It is an emirp because it is prime and its reverse (9901220220121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1210220221099 - 2¹ = 1210220221097 is a prime.

Together with 1210220221097, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1210220221099.

It is not a weakly prime, because it can be changed into another prime (1210220221097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605110110549 + 605110110550.

It is an arithmetic number, because the mean of its divisors is an integer number (605110110550).

Almost surely, 2^{1210220221099} is an apocalyptic number.

1210220221099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210220221099 is an equidigital number, since it uses as much as digits as its factorization.

1210220221099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 1210220221099 in words is "one trillion, two hundred ten billion, two hundred twenty million, two hundred twenty-one thousand, ninety-nine".