21002214411 has 32 divisors (see below), whose sum is σ = 32596784640. Its totient is φ = 13339260000.

The previous prime is 21002214403. The next prime is 21002214419. The reversal of 21002214411 is 11441220012.

21002214411 is a `hidden beast` number, since 2 + 1 + 0 + 0 + 221 + 441 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (21002214403) and next prime (21002214419).

It is not a de Polignac number, because 21002214411 - 2³ = 21002214403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21002214419) 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, 88501 + ... + 223241.

It is an arithmetic number, because the mean of its divisors is an integer number (1018649520).

Almost surely, 2^21002214411 is an apocalyptic number.

21002214411 is a deficient number, since it is larger than the sum of its proper divisors (11594570229).

21002214411 is a wasteful number, since it uses less digits than its factorization.

21002214411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135024 (or 135018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21002214411 its reverse (11441220012), we get a palindrome (32443434423).

The spelling of 21002214411 in words is "twenty-one billion, two million, two hundred fourteen thousand, four hundred eleven".