121630583 has 2 divisors, whose sum is σ = 121630584. Its totient is φ = 121630582.

The previous prime is 121630573. The next prime is 121630589. The reversal of 121630583 is 385036121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121630583 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is equal to p_6929201 and since 121630583 and 6929201 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121630589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60815291 + 60815292.

It is an arithmetic number, because the mean of its divisors is an integer number (60815292).

Almost surely, 2^121630583 is an apocalyptic number.

121630583 is a deficient number, since it is larger than the sum of its proper divisors (1).

121630583 is an equidigital number, since it uses as much as digits as its factorization.

121630583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 121630583 is about 11028.6256170023. The cubic root of 121630583 is about 495.4664623089.

The spelling of 121630583 in words is "one hundred twenty-one million, six hundred thirty thousand, five hundred eighty-three".