121197403 has 4 divisors (see below), whose sum is σ = 128326680. Its totient is φ = 114068128.

The previous prime is 121197397. The next prime is 121197407. The reversal of 121197403 is 304791121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121197403 is a prime.

It is a super-5 number, since 5×121197403⁵ (a number of 42 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121197407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3564613 + ... + 3564646.

It is an arithmetic number, because the mean of its divisors is an integer number (32081670).

Almost surely, 2^121197403 is an apocalyptic number.

121197403 is a deficient number, since it is larger than the sum of its proper divisors (7129277).

121197403 is an equidigital number, since it uses as much as digits as its factorization.

121197403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7129276.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 121197403 is about 11008.9692069694. The cubic root of 121197403 is about 494.8775713274.

The spelling of 121197403 in words is "one hundred twenty-one million, one hundred ninety-seven thousand, four hundred three".