21236072035076 has 12 divisors (see below), whose sum is σ = 37268404041372. Its totient is φ = 10587956594688.

The previous prime is 21236072035063. The next prime is 21236072035097. The reversal of 21236072035076 is 67053027063212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14568191248900 + 6667880786176 = 3816830^2 + 2582224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7519854125 + ... + 7519856948.

It is an arithmetic number, because the mean of its divisors is an integer number (3105700336781).

Almost surely, 2^{21236072035076} is an apocalyptic number.

It is an amenable number.

21236072035076 is a deficient number, since it is larger than the sum of its proper divisors (16032332006296).

21236072035076 is a wasteful number, since it uses less digits than its factorization.

21236072035076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15039711430 (or 15039711428 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 44.

Adding to 21236072035076 its reverse (67053027063212), we get a palindrome (88289099098288).

The spelling of 21236072035076 in words is "twenty-one trillion, two hundred thirty-six billion, seventy-two million, thirty-five thousand, seventy-six".