121113220199 has 2 divisors, whose sum is σ = 121113220200. Its totient is φ = 121113220198.

The previous prime is 121113220177. The next prime is 121113220219. The reversal of 121113220199 is 991022311121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121113220199 - 2¹⁶ = 121113154663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121113220169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556610099 + 60556610100.

It is an arithmetic number, because the mean of its divisors is an integer number (60556610100).

Almost surely, 2^121113220199 is an apocalyptic number.

121113220199 is a deficient number, since it is larger than the sum of its proper divisors (1).

121113220199 is an equidigital number, since it uses as much as digits as its factorization.

121113220199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 32.

The spelling of 121113220199 in words is "one hundred twenty-one billion, one hundred thirteen million, two hundred twenty thousand, one hundred ninety-nine".