121648711 has 4 divisors (see below), whose sum is σ = 124936552. Its totient is φ = 118360872.

The previous prime is 121648699. The next prime is 121648717. The reversal of 121648711 is 117846121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121648711 - 2¹¹ = 121646663 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121648717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643865 + ... + 1643938.

It is an arithmetic number, because the mean of its divisors is an integer number (31234138).

Almost surely, 2^121648711 is an apocalyptic number.

121648711 is a deficient number, since it is larger than the sum of its proper divisors (3287841).

121648711 is an equidigital number, since it uses as much as digits as its factorization.

121648711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287840.

The product of its digits is 2688, while the sum is 31.

The square root of 121648711 is about 11029.4474476286. The cubic root of 121648711 is about 495.4910761015.

The spelling of 121648711 in words is "one hundred twenty-one million, six hundred forty-eight thousand, seven hundred eleven".