121220122 has 8 divisors (see below), whose sum is σ = 182236500. Its totient is φ = 60474624.

The previous prime is 121220117. The next prime is 121220147. The reversal of 121220122 is 221022121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 108180801 + 13039321 = 10401^2 + 3611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66597 + ... + 68392.

Almost surely, 2^121220122 is an apocalyptic number.

121220122 is a deficient number, since it is larger than the sum of its proper divisors (61016378).

121220122 is a wasteful number, since it uses less digits than its factorization.

121220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135440.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121220122 is about 11010.0009990917. Note that the first 3 decimals coincide. The cubic root of 121220122 is about 494.9084917399.

Adding to 121220122 its reverse (221022121), we get a palindrome (342242243).

The spelling of 121220122 in words is "one hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".