21214055002 has 48 divisors (see below), whose sum is σ = 38436525000. Its totient is φ = 8745281664.

The previous prime is 21214054999. The next prime is 21214055003. The reversal of 21214055002 is 20055041212.

It can be written as a sum of positive squares in 4 ways, for example, as 11029410441 + 10184644561 = 105021^2 + 100919^2 .

It is a super-2 number, since 2×21214055002² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21214055003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 750624 + ... + 778372.

Almost surely, 2^21214055002 is an apocalyptic number.

21214055002 is a deficient number, since it is larger than the sum of its proper divisors (17222469998).

21214055002 is a wasteful number, since it uses less digits than its factorization.

21214055002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28063 (or 28056 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 21214055002 its reverse (20055041212), we get a palindrome (41269096214).

The spelling of 21214055002 in words is "twenty-one billion, two hundred fourteen million, fifty-five thousand, two".