21220414002 has 24 divisors (see below), whose sum is σ = 46494169020. Its totient is φ = 6993993600.

The previous prime is 21220413859. The next prime is 21220414027. The reversal of 21220414002 is 20041402212.

21220414002 is a `hidden beast` number, since 2 + 1 + 220 + 41 + 400 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16786052721 + 4434361281 = 129561^2 + 66591^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6621499 + ... + 6624702.

Almost surely, 2^21220414002 is an apocalyptic number.

21220414002 is an abundant number, since it is smaller than the sum of its proper divisors (25273755018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21220414002 is a wasteful number, since it uses less digits than its factorization.

21220414002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13246298 (or 13246295 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21220414002 its reverse (20041402212), we get a palindrome (41261816214).

The spelling of 21220414002 in words is "twenty-one billion, two hundred twenty million, four hundred fourteen thousand, two".