21233133011111 has 8 divisors (see below), whose sum is σ = 25693875240480. Its totient is φ = 17129250160128.

The previous prime is 21233133011093. The next prime is 21233133011147. The reversal of 21233133011111 is 11111033133212.

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 21233133011111 - 2⁶ = 21233133011047 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 (21233133011161) 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, 89214844466 + ... + 89214844703.

It is an arithmetic number, because the mean of its divisors is an integer number (3211734405060).

Almost surely, 2^{21233133011111} is an apocalyptic number.

21233133011111 is a deficient number, since it is larger than the sum of its proper divisors (4460742229369).

21233133011111 is a wasteful number, since it uses less digits than its factorization.

21233133011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178429689193.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 21233133011111 its reverse (11111033133212), we get a palindrome (32344166144323).

The spelling of 21233133011111 in words is "twenty-one trillion, two hundred thirty-three billion, one hundred thirty-three million, eleven thousand, one hundred eleven".