1201221111199 has 2 divisors, whose sum is σ = 1201221111200. Its totient is φ = 1201221111198.

The previous prime is 1201221111179. The next prime is 1201221111217. The reversal of 1201221111199 is 9911111221021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201221111199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201221111199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201221111179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600610555599 + 600610555600.

It is an arithmetic number, because the mean of its divisors is an integer number (600610555600).

Almost surely, 2^{1201221111199} is an apocalyptic number.

1201221111199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201221111199 is an equidigital number, since it uses as much as digits as its factorization.

1201221111199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 31.

It can be divided in two parts, 120122 and 1111199, that added together give a palindrome (1231321).

The spelling of 1201221111199 in words is "one trillion, two hundred one billion, two hundred twenty-one million, one hundred eleven thousand, one hundred ninety-nine".