121163438 has 32 divisors (see below), whose sum is σ = 206807040. Its totient is φ = 52740000.

The previous prime is 121163351. The next prime is 121163453. The reversal of 121163438 is 834361121.

It is a self number, because there is not a number n which added to its sum of digits gives 121163438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68003 + ... + 69761.

It is an arithmetic number, because the mean of its divisors is an integer number (6462720).

Almost surely, 2^121163438 is an apocalyptic number.

121163438 is a deficient number, since it is larger than the sum of its proper divisors (85643602).

121163438 is a wasteful number, since it uses less digits than its factorization.

121163438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904.

The product of its digits is 3456, while the sum is 29.

The square root of 121163438 is about 11007.4264930546. The cubic root of 121163438 is about 494.8313379739.

The spelling of 121163438 in words is "one hundred twenty-one million, one hundred sixty-three thousand, four hundred thirty-eight".