121719011 has 8 divisors (see below), whose sum is σ = 125650800. Its totient is φ = 117821088.

The previous prime is 121719007. The next prime is 121719029. The reversal of 121719011 is 110917121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121719011 - 2² = 121719007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121719071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1061 + ... + 15638.

It is an arithmetic number, because the mean of its divisors is an integer number (15706350).

Almost surely, 2^121719011 is an apocalyptic number.

121719011 is a deficient number, since it is larger than the sum of its proper divisors (3931789).

121719011 is a wasteful number, since it uses less digits than its factorization.

121719011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16933.

The product of its (nonzero) digits is 126, while the sum is 23.

The square root of 121719011 is about 11032.6339103588. The cubic root of 121719011 is about 495.5865047462.

The spelling of 121719011 in words is "one hundred twenty-one million, seven hundred nineteen thousand, eleven".