21120433404111 has 24 divisors (see below), whose sum is σ = 30534896887040. Its totient is φ = 14067551394000.

The previous prime is 21120433404097. The next prime is 21120433404137. The reversal of 21120433404111 is 11140433402112.

It is a happy number.

21120433404111 is a `hidden beast` number, since 2 + 1 + 1 + 204 + 3 + 3 + 40 + 411 + 1 = 666.

It is not a de Polignac number, because 21120433404111 - 2¹⁴ = 21120433387727 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 (21120433404181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92268360 + ... + 92496978.

Almost surely, 2^{21120433404111} is an apocalyptic number.

21120433404111 is a deficient number, since it is larger than the sum of its proper divisors (9414463482929).

21120433404111 is a wasteful number, since it uses less digits than its factorization.

21120433404111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237867 (or 237864 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 21120433404111 its reverse (11140433402112), we get a palindrome (32260866806223).

The spelling of 21120433404111 in words is "twenty-one trillion, one hundred twenty billion, four hundred thirty-three million, four hundred four thousand, one hundred eleven".