121808803 has 2 divisors, whose sum is σ = 121808804. Its totient is φ = 121808802.

The previous prime is 121808801. The next prime is 121808833. The reversal of 121808803 is 308808121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121808803 - 2¹ = 121808801 is a prime.

It is a super-3 number, since 3×121808803³ (a number of 25 digits) contains 333 as substring.

Together with 121808801, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121808801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60904401 + 60904402.

It is an arithmetic number, because the mean of its divisors is an integer number (60904402).

Almost surely, 2^121808803 is an apocalyptic number.

121808803 is a deficient number, since it is larger than the sum of its proper divisors (1).

121808803 is an equidigital number, since it uses as much as digits as its factorization.

121808803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 121808803 is about 11036.7025419733. The cubic root of 121808803 is about 495.7083393583.

The spelling of 121808803 in words is "one hundred twenty-one million, eight hundred eight thousand, eight hundred three".