21214036536412 has 12 divisors (see below), whose sum is σ = 37125863427016. Its totient is φ = 10606646985840.

The previous prime is 21214036536403. The next prime is 21214036536449. The reversal of 21214036536412 is 21463563041212.

It is a congruent number.

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, 92692014 + ... + 92920597.

Almost surely, 2^{21214036536412} is an apocalyptic number.

It is an amenable number.

21214036536412 is a deficient number, since it is larger than the sum of its proper divisors (15911826890604).

21214036536412 is a wasteful number, since it uses less digits than its factorization.

21214036536412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185641188 (or 185641186 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 21214036536412 its reverse (21463563041212), we get a palindrome (42677599577624).

The spelling of 21214036536412 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred thirty-six thousand, four hundred twelve".