21214051200064 has 14 divisors (see below), whose sum is σ = 42096632850254. Its totient is φ = 10607025600000.

The previous prime is 21214051200061. The next prime is 21214051200119. The reversal of 21214051200064 is 46000215041212.

It can be written as a sum of positive squares in only one way, i.e., 20607895526464 + 606155673600 = 4539592^2 + 778560^2 .

It is not an unprimeable number, because it can be changed into a prime (21214051200061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165734774937 + ... + 165734775064.

Almost surely, 2^{21214051200064} is an apocalyptic number.

It is an amenable number.

21214051200064 is a deficient number, since it is larger than the sum of its proper divisors (20882581650190).

21214051200064 is an equidigital number, since it uses as much as digits as its factorization.

21214051200064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331469550013 (or 331469550003 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 21214051200064 its reverse (46000215041212), we get a palindrome (67214266241276).

The spelling of 21214051200064 in words is "twenty-one trillion, two hundred fourteen billion, fifty-one million, two hundred thousand, sixty-four".