21110132021111 has 24 divisors (see below), whose sum is σ = 25764390080640. Its totient is φ = 17223647716800.

The previous prime is 21110132021089. The next prime is 21110132021117. The reversal of 21110132021111 is 11112023101112.

It is not a de Polignac number, because 21110132021111 - 2⁴² = 16712085510007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21110132021111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110132021117) 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, 113820356 + ... + 114005673.

It is an arithmetic number, because the mean of its divisors is an integer number (1073516253360).

Almost surely, 2^{21110132021111} is an apocalyptic number.

21110132021111 is a deficient number, since it is larger than the sum of its proper divisors (4654258059529).

21110132021111 is a wasteful number, since it uses less digits than its factorization.

21110132021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227826135 (or 227826128 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 21110132021111 its reverse (11112023101112), we get a palindrome (32222155122223).

The spelling of 21110132021111 in words is "twenty-one trillion, one hundred ten billion, one hundred thirty-two million, twenty-one thousand, one hundred eleven".