121225106 has 4 divisors (see below), whose sum is σ = 181837662. Its totient is φ = 60612552.

The previous prime is 121225099. The next prime is 121225121. The reversal of 121225106 is 601522121.

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., 88266025 + 32959081 = 9395^2 + 5741^2 .

It is a super-2 number, since 2×121225106² = 29391052649422472, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 30306275 + ... + 30306278.

Almost surely, 2^121225106 is an apocalyptic number.

121225106 is a deficient number, since it is larger than the sum of its proper divisors (60612556).

121225106 is an equidigital number, since it uses as much as digits as its factorization.

121225106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60612555.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 121225106 is about 11010.2273364359. The cubic root of 121225106 is about 494.9152744151.

Adding to 121225106 its reverse (601522121), we get a palindrome (722747227).

The spelling of 121225106 in words is "one hundred twenty-one million, two hundred twenty-five thousand, one hundred six".