20340121121 has 8 divisors (see below), whose sum is σ = 21596595840. Its totient is φ = 19090312768.

The previous prime is 20340121013. The next prime is 20340121141. The reversal of 20340121121 is 12112104302.

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 20340121121 - 2²² = 20335926817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20340121121.

It is not an unprimeable number, because it can be changed into a prime (20340121141) 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, 1660301 + ... + 1672506.

It is an arithmetic number, because the mean of its divisors is an integer number (2699574480).

Almost surely, 2^20340121121 is an apocalyptic number.

It is an amenable number.

20340121121 is a deficient number, since it is larger than the sum of its proper divisors (1256474719).

20340121121 is a wasteful number, since it uses less digits than its factorization.

20340121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333183.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20340121121 its reverse (12112104302), we get a palindrome (32452225423).

The spelling of 20340121121 in words is "twenty billion, three hundred forty million, one hundred twenty-one thousand, one hundred twenty-one".