21331113011 has 8 divisors (see below), whose sum is σ = 22982747424. Its totient is φ = 19681018560.

The previous prime is 21331112977. The next prime is 21331113017. The reversal of 21331113011 is 11031113312.

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 21331113011 - 2³⁴ = 4151243827 is a prime.

It is a super-2 number, since 2×21331113011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21331113017) 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, 356135 + ... + 411696.

It is an arithmetic number, because the mean of its divisors is an integer number (2872843428).

Almost surely, 2^21331113011 is an apocalyptic number.

21331113011 is a deficient number, since it is larger than the sum of its proper divisors (1651634413).

21331113011 is a wasteful number, since it uses less digits than its factorization.

21331113011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769981.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 21331113011 its reverse (11031113312), we get a palindrome (32362226323).

The spelling of 21331113011 in words is "twenty-one billion, three hundred thirty-one million, one hundred thirteen thousand, eleven".