21332011001111 has 4 divisors (see below), whose sum is σ = 21360721649232. Its totient is φ = 21303300352992.

The previous prime is 21332011001083. The next prime is 21332011001113. The reversal of 21332011001111 is 11110011023312.

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

It is a cyclic number.

It is not a de Polignac number, because 21332011001111 - 2³⁸ = 21057133094167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21332011001111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332011001113) 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, 14355322946 + ... + 14355324431.

It is an arithmetic number, because the mean of its divisors is an integer number (5340180412308).

Almost surely, 2^{21332011001111} is an apocalyptic number.

21332011001111 is a deficient number, since it is larger than the sum of its proper divisors (28710648121).

21332011001111 is an equidigital number, since it uses as much as digits as its factorization.

21332011001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28710648120.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 21332011001111 its reverse (11110011023312), we get a palindrome (32442022024423).

The spelling of 21332011001111 in words is "twenty-one trillion, three hundred thirty-two billion, eleven million, one thousand, one hundred eleven".