20331133211 has 16 divisors (see below), whose sum is σ = 21669962400. Its totient is φ = 19043152128.

The previous prime is 20331133171. The next prime is 20331133247. The reversal of 20331133211 is 11233113302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20331133211 is a prime.

It is a super-3 number, since 3×20331133211³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331133411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62480 + ... + 211106.

It is an arithmetic number, because the mean of its divisors is an integer number (1354372650).

Almost surely, 2^20331133211 is an apocalyptic number.

20331133211 is a deficient number, since it is larger than the sum of its proper divisors (1338829189).

20331133211 is a wasteful number, since it uses less digits than its factorization.

20331133211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148798.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 20331133211 its reverse (11233113302), we get a palindrome (31564246513).

The spelling of 20331133211 in words is "twenty billion, three hundred thirty-one million, one hundred thirty-three thousand, two hundred eleven".