21214036536004 has 12 divisors (see below), whose sum is σ = 39980299625644. Its totient is φ = 9791093785824.

The previous prime is 21214036535959. The next prime is 21214036536061. The reversal of 21214036536004 is 40063563041212.

It can be written as a sum of positive squares in 2 ways, for example, as 11175582140100 + 10038454395904 = 3342990^2 + 3168352^2 .

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, 203981120487 + ... + 203981120590.

Almost surely, 2^{21214036536004} is an apocalyptic number.

It is an amenable number.

21214036536004 is a deficient number, since it is larger than the sum of its proper divisors (18766263089640).

21214036536004 is a wasteful number, since it uses less digits than its factorization.

21214036536004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407962241094 (or 407962241092 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 21214036536004 its reverse (40063563041212), we get a palindrome (61277599577216).

The spelling of 21214036536004 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred thirty-six thousand, four".