121632011 has 2 divisors, whose sum is σ = 121632012. Its totient is φ = 121632010.

The previous prime is 121631989. The next prime is 121632013. The reversal of 121632011 is 110236121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121632011 - 2¹⁰ = 121630987 is a prime.

Together with 121632013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121632013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60816005 + 60816006.

It is an arithmetic number, because the mean of its divisors is an integer number (60816006).

Almost surely, 2^121632011 is an apocalyptic number.

121632011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121632011 is an equidigital number, since it uses as much as digits as its factorization.

121632011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 121632011 is about 11028.6903574269. The cubic root of 121632011 is about 495.4684013040.

Adding to 121632011 its reverse (110236121), we get a palindrome (231868132).

The spelling of 121632011 in words is "one hundred twenty-one million, six hundred thirty-two thousand, eleven".