1212210220099 has 2 divisors, whose sum is σ = 1212210220100. Its totient is φ = 1212210220098.

The previous prime is 1212210220021. The next prime is 1212210220147. The reversal of 1212210220099 is 9900220122121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212210220099 - 2³³ = 1203620285507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212210220099.

It is not a weakly prime, because it can be changed into another prime (1212210220019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606105110049 + 606105110050.

It is an arithmetic number, because the mean of its divisors is an integer number (606105110050).

Almost surely, 2^{1212210220099} is an apocalyptic number.

1212210220099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212210220099 is an equidigital number, since it uses as much as digits as its factorization.

1212210220099 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 1212210220099 in words is "one trillion, two hundred twelve billion, two hundred ten million, two hundred twenty thousand, ninety-nine".