121610803 has 2 divisors, whose sum is σ = 121610804. Its totient is φ = 121610802.

The previous prime is 121610747. The next prime is 121610807. The reversal of 121610803 is 308016121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121610803 - 2²¹ = 119513651 is a prime.

It is not a weakly prime, because it can be changed into another prime (121610807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60805401 + 60805402.

It is an arithmetic number, because the mean of its divisors is an integer number (60805402).

Almost surely, 2^121610803 is an apocalyptic number.

121610803 is a deficient number, since it is larger than the sum of its proper divisors (1).

121610803 is an equidigital number, since it uses as much as digits as its factorization.

121610803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 121610803 is about 11027.7288232890. The cubic root of 121610803 is about 495.4396026773.

Adding to 121610803 its reverse (308016121), we get a palindrome (429626924).

The spelling of 121610803 in words is "one hundred twenty-one million, six hundred ten thousand, eight hundred three".