121121612 has 6 divisors (see below), whose sum is σ = 211962828. Its totient is φ = 60560804.

The previous prime is 121121597. The next prime is 121121633. The reversal of 121121612 is 216121121.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15140198 + ... + 15140205.

It is an arithmetic number, because the mean of its divisors is an integer number (35327138).

Almost surely, 2^121121612 is an apocalyptic number.

It is an amenable number.

121121612 is a deficient number, since it is larger than the sum of its proper divisors (90841216).

121121612 is a wasteful number, since it uses less digits than its factorization.

121121612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30280407 (or 30280405 counting only the distinct ones).

The product of its digits is 48, while the sum is 17.

The square root of 121121612 is about 11005.5264299351. The cubic root of 121121612 is about 494.7743923092.

Adding to 121121612 its reverse (216121121), we get a palindrome (337242733).

The spelling of 121121612 in words is "one hundred twenty-one million, one hundred twenty-one thousand, six hundred twelve".