20133211111 has 8 divisors (see below), whose sum is σ = 22429572480. Its totient is φ = 17943657312.

The previous prime is 20133211097. The next prime is 20133211123. The reversal of 20133211111 is 11111233102.

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 20133211111 - 2⁵ = 20133211079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133211141) 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, 26701495 + ... + 26702248.

It is an arithmetic number, because the mean of its divisors is an integer number (2803696560).

Almost surely, 2^20133211111 is an apocalyptic number.

20133211111 is a deficient number, since it is larger than the sum of its proper divisors (2296361369).

20133211111 is a wasteful number, since it uses less digits than its factorization.

20133211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53403785.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 20133211111 its reverse (11111233102), we get a palindrome (31244444213).

The spelling of 20133211111 in words is "twenty billion, one hundred thirty-three million, two hundred eleven thousand, one hundred eleven".