21110511045 has 32 divisors (see below), whose sum is σ = 36386243712. Its totient is φ = 10389664512.

The previous prime is 21110511029. The next prime is 21110511047. The reversal of 21110511045 is 54011501112.

It is not a de Polignac number, because 21110511045 - 2⁴ = 21110511029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110511047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 695527 + ... + 725243.

It is an arithmetic number, because the mean of its divisors is an integer number (1137070116).

Almost surely, 2^21110511045 is an apocalyptic number.

It is an amenable number.

21110511045 is a deficient number, since it is larger than the sum of its proper divisors (15275732667).

21110511045 is a wasteful number, since it uses less digits than its factorization.

21110511045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33381.

The product of its (nonzero) digits is 200, while the sum is 21.

The spelling of 21110511045 in words is "twenty-one billion, one hundred ten million, five hundred eleven thousand, forty-five".