121139188 has 12 divisors (see below), whose sum is σ = 212151940. Its totient is φ = 60524352.

The previous prime is 121139173. The next prime is 121139191. The reversal of 121139188 is 881931121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5963364 + 115175824 = 2442^2 + 10732^2 .

It is a super-3 number, since 3×121139188³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 4881 + ... + 16312.

Almost surely, 2^121139188 is an apocalyptic number.

It is an amenable number.

121139188 is a deficient number, since it is larger than the sum of its proper divisors (91012752).

121139188 is a wasteful number, since it uses less digits than its factorization.

121139188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22626 (or 22624 counting only the distinct ones).

The product of its digits is 3456, while the sum is 34.

The square root of 121139188 is about 11006.3249088876. The cubic root of 121139188 is about 494.7983234475.

The spelling of 121139188 in words is "one hundred twenty-one million, one hundred thirty-nine thousand, one hundred eighty-eight".