121002122 has 8 divisors (see below), whose sum is σ = 182444196. Its totient is φ = 60187392.

The previous prime is 121002121. The next prime is 121002157. The reversal of 121002122 is 221200121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 119486761 + 1515361 = 10931^2 + 1231^2 .

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

It is not an unprimeable number, because it can be changed into a prime (121002121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156353 + ... + 157124.

Almost surely, 2^121002122 is an apocalyptic number.

121002122 is a deficient number, since it is larger than the sum of its proper divisors (61442074).

121002122 is a wasteful number, since it uses less digits than its factorization.

121002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313672.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 121002122 is about 11000.0964541226. The cubic root of 121002122 is about 494.6116356572.

Adding to 121002122 its reverse (221200121), we get a palindrome (342202243).

The spelling of 121002122 in words is "one hundred twenty-one million, two thousand, one hundred twenty-two".