121291084 has 6 divisors (see below), whose sum is σ = 212259404. Its totient is φ = 60645540.

The previous prime is 121291081. The next prime is 121291087. The reversal of 121291084 is 480192121.

It is an interprime number because it is at equal distance from previous prime (121291081) and next prime (121291087).

It is not an unprimeable number, because it can be changed into a prime (121291081) 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 as a sum of consecutive naturals, namely, 15161382 + ... + 15161389.

Almost surely, 2^121291084 is an apocalyptic number.

It is an amenable number.

121291084 is a deficient number, since it is larger than the sum of its proper divisors (90968320).

121291084 is a wasteful number, since it uses less digits than its factorization.

121291084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30322775 (or 30322773 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 121291084 is about 11013.2231431130. The cubic root of 121291084 is about 495.0050456922.

The spelling of 121291084 in words is "one hundred twenty-one million, two hundred ninety-one thousand, eighty-four".