121997063 has 4 divisors (see below), whose sum is σ = 124834248. Its totient is φ = 119159880.

The previous prime is 121997053. The next prime is 121997069. The reversal of 121997063 is 360799121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 360799121 = 29 ⋅12441349.

It is not a de Polignac number, because 121997063 - 2⁴ = 121997047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121997069) 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 in 3 ways as a sum of consecutive naturals, for example, 1418528 + ... + 1418613.

It is an arithmetic number, because the mean of its divisors is an integer number (31208562).

Almost surely, 2^121997063 is an apocalyptic number.

121997063 is a deficient number, since it is larger than the sum of its proper divisors (2837185).

121997063 is an equidigital number, since it uses as much as digits as its factorization.

121997063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837184.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 121997063 is about 11045.2280646440. The cubic root of 121997063 is about 495.9635864158.

The spelling of 121997063 in words is "one hundred twenty-one million, nine hundred ninety-seven thousand, sixty-three".