21214100535 has 16 divisors (see below), whose sum is σ = 33979119840. Its totient is φ = 11302000640.

The previous prime is 21214100483. The next prime is 21214100549. The reversal of 21214100535 is 53500141212.

It is a happy number.

It is not a de Polignac number, because 21214100535 - 2⁹ = 21214100023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747246 + ... + 775115.

It is an arithmetic number, because the mean of its divisors is an integer number (2123694990).

Almost surely, 2^21214100535 is an apocalyptic number.

21214100535 is a deficient number, since it is larger than the sum of its proper divisors (12765019305).

21214100535 is a wasteful number, since it uses less digits than its factorization.

21214100535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523298.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 21214100535 its reverse (53500141212), we get a palindrome (74714241747).

The spelling of 21214100535 in words is "twenty-one billion, two hundred fourteen million, one hundred thousand, five hundred thirty-five".