121012221199 has 2 divisors, whose sum is σ = 121012221200. Its totient is φ = 121012221198.

The previous prime is 121012221181. The next prime is 121012221241. The reversal of 121012221199 is 991122210121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121012221199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121012221199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121012221179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506110599 + 60506110600.

It is an arithmetic number, because the mean of its divisors is an integer number (60506110600).

Almost surely, 2^121012221199 is an apocalyptic number.

121012221199 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012221199 is an equidigital number, since it uses as much as digits as its factorization.

121012221199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 31.

It can be divided in two parts, 1210122 and 21199, that added together give a palindrome (1231321).

The spelling of 121012221199 in words is "one hundred twenty-one billion, twelve million, two hundred twenty-one thousand, one hundred ninety-nine".