121201112120122 has 4 divisors (see below), whose sum is σ = 181801668180186. Its totient is φ = 60600556060060.

The previous prime is 121201112120041. The next prime is 121201112120201. The reversal of 121201112120122 is 221021211102121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 113027282582041 + 8173829538081 = 10631429^2 + 2858991^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121201112120122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30300278030029 + ... + 30300278030032.

Almost surely, 2^{121201112120122} is an apocalyptic number.

121201112120122 is a deficient number, since it is larger than the sum of its proper divisors (60600556060064).

121201112120122 is an equidigital number, since it uses as much as digits as its factorization.

121201112120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60600556060063.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121201112120122 its reverse (221021211102121), we get a palindrome (342222323222243).

The spelling of 121201112120122 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twelve million, one hundred twenty thousand, one hundred twenty-two".