21214011335 has 32 divisors (see below), whose sum is σ = 28341230400. Its totient is φ = 15114470400.

The previous prime is 21214011319. The next prime is 21214011341. The reversal of 21214011335 is 53311041212.

It is not a de Polignac number, because 21214011335 - 2⁴ = 21214011319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21214011335.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 580505 + ... + 615965.

It is an arithmetic number, because the mean of its divisors is an integer number (885663450).

Almost surely, 2^21214011335 is an apocalyptic number.

21214011335 is a deficient number, since it is larger than the sum of its proper divisors (7127219065).

21214011335 is a wasteful number, since it uses less digits than its factorization.

21214011335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35699.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 21214011335 its reverse (53311041212), we get a palindrome (74525052547).

The spelling of 21214011335 in words is "twenty-one billion, two hundred fourteen million, eleven thousand, three hundred thirty-five".