121320566 has 8 divisors (see below), whose sum is σ = 182052360. Its totient is φ = 60636448.

The previous prime is 121320539. The next prime is 121320593. The reversal of 121320566 is 665023121.

It is an interprime number because it is at equal distance from previous prime (121320539) and next prime (121320593).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4676 + ... + 16263.

It is an arithmetic number, because the mean of its divisors is an integer number (22756545).

Almost surely, 2^121320566 is an apocalyptic number.

121320566 is a deficient number, since it is larger than the sum of its proper divisors (60731794).

121320566 is a wasteful number, since it uses less digits than its factorization.

121320566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23838.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 121320566 is about 11014.5615437020. The cubic root of 121320566 is about 495.0451490975.

Adding to 121320566 its reverse (665023121), we get a palindrome (786343687).

The spelling of 121320566 in words is "one hundred twenty-one million, three hundred twenty thousand, five hundred sixty-six".