20311140121211 has 8 divisors (see below), whose sum is σ = 20568348633600. Its totient is φ = 20053934245800.

The previous prime is 20311140121201. The next prime is 20311140121241. The reversal of 20311140121211 is 11212104111302.

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 20311140121211 - 2¹⁸ = 20311139859067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20311140121201) 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, 18258536 + ... + 19338986.

It is an arithmetic number, because the mean of its divisors is an integer number (2571043579200).

Almost surely, 2^{20311140121211} is an apocalyptic number.

20311140121211 is a deficient number, since it is larger than the sum of its proper divisors (257208512389).

20311140121211 is a wasteful number, since it uses less digits than its factorization.

20311140121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318489.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 20311140121211 its reverse (11212104111302), we get a palindrome (31523244232513).

The spelling of 20311140121211 in words is "twenty trillion, three hundred eleven billion, one hundred forty million, one hundred twenty-one thousand, two hundred eleven".