121200222010123 has 2 divisors, whose sum is σ = 121200222010124. Its totient is φ = 121200222010122.

The previous prime is 121200222010117. The next prime is 121200222010177. The reversal of 121200222010123 is 321010222002121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121200222010123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121200222010123.

It is not a weakly prime, because it can be changed into another prime (121200220010123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600111005061 + 60600111005062.

It is an arithmetic number, because the mean of its divisors is an integer number (60600111005062).

Almost surely, 2^{121200222010123} is an apocalyptic number.

121200222010123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121200222010123 is an equidigital number, since it uses as much as digits as its factorization.

121200222010123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121200222010123 its reverse (321010222002121), we get a palindrome (442210444012244).

The spelling of 121200222010123 in words is "one hundred twenty-one trillion, two hundred billion, two hundred twenty-two million, ten thousand, one hundred twenty-three".