121189072 has 10 divisors (see below), whose sum is σ = 234803858. Its totient is φ = 60594528.

The previous prime is 121189069. The next prime is 121189151. The reversal of 121189072 is 270981121.

It can be written as a sum of positive squares in only one way, i.e., 109327936 + 11861136 = 10456^2 + 3444^2 .

It is a congruent number.

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, 3787143 + ... + 3787174.

Almost surely, 2^121189072 is an apocalyptic number.

It is an amenable number.

121189072 is a deficient number, since it is larger than the sum of its proper divisors (113614786).

121189072 is an equidigital number, since it uses as much as digits as its factorization.

121189072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7574325 (or 7574319 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 121189072 is about 11008.5908271677. The cubic root of 121189072 is about 494.8662319219.

The spelling of 121189072 in words is "one hundred twenty-one million, one hundred eighty-nine thousand, seventy-two".