121102220122 has 16 divisors (see below), whose sum is σ = 196939600200. Its totient is φ = 55518207552.

The previous prime is 121102220077. The next prime is 121102220191. The reversal of 121102220122 is 221022201121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 73995424441 + 47106795681 = 272021^2 + 217041^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121102220096 and 121102220105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15626253 + ... + 15634000.

Almost surely, 2^121102220122 is an apocalyptic number.

121102220122 is a deficient number, since it is larger than the sum of its proper divisors (75837380078).

121102220122 is a wasteful number, since it uses less digits than its factorization.

121102220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31260417.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121102220122 its reverse (221022201121), we get a palindrome (342124421243).

The spelling of 121102220122 in words is "one hundred twenty-one billion, one hundred two million, two hundred twenty thousand, one hundred twenty-two".