121604851 has 2 divisors, whose sum is σ = 121604852. Its totient is φ = 121604850.

The previous prime is 121604809. The next prime is 121604863. The reversal of 121604851 is 158406121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121604851 - 2⁹ = 121604339 is a prime.

It is not a weakly prime, because it can be changed into another prime (121604881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60802425 + 60802426.

It is an arithmetic number, because the mean of its divisors is an integer number (60802426).

Almost surely, 2^121604851 is an apocalyptic number.

121604851 is a deficient number, since it is larger than the sum of its proper divisors (1).

121604851 is an equidigital number, since it uses as much as digits as its factorization.

121604851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 121604851 is about 11027.4589548091. The cubic root of 121604851 is about 495.4315197753.

The spelling of 121604851 in words is "one hundred twenty-one million, six hundred four thousand, eight hundred fifty-one".