20332311011 has 4 divisors (see below), whose sum is σ = 20487519624. Its totient is φ = 20177102400.

The previous prime is 20332311001. The next prime is 20332311023. The reversal of 20332311011 is 11011323302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20332311011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20332311001) 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, 77604110 + ... + 77604371.

It is an arithmetic number, because the mean of its divisors is an integer number (5121879906).

Almost surely, 2^20332311011 is an apocalyptic number.

20332311011 is a deficient number, since it is larger than the sum of its proper divisors (155208613).

20332311011 is a wasteful number, since it uses less digits than its factorization.

20332311011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155208612.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20332311011 its reverse (11011323302), we get a palindrome (31343634313).

The spelling of 20332311011 in words is "twenty billion, three hundred thirty-two million, three hundred eleven thousand, eleven".