21214220006403 has 64 divisors (see below), whose sum is σ = 32626550476800. Its totient is φ = 13607150135040.

The previous prime is 21214220006377. The next prime is 21214220006407. The reversal of 21214220006403 is 30460002241212.

21214220006403 is a `hidden beast` number, since 2 + 1 + 2 + 14 + 2 + 2 + 0 + 0 + 0 + 640 + 3 = 666.

It is not a de Polignac number, because 21214220006403 - 2¹³ = 21214219998211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21214220006407) 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 63 ways as a sum of consecutive naturals, for example, 553833550 + ... + 553871852.

It is an arithmetic number, because the mean of its divisors is an integer number (509789851200).

Almost surely, 2^{21214220006403} is an apocalyptic number.

21214220006403 is a deficient number, since it is larger than the sum of its proper divisors (11412330470397).

21214220006403 is a wasteful number, since it uses less digits than its factorization.

21214220006403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40809 (or 40803 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 21214220006403 its reverse (30460002241212), we get a palindrome (51674222247615).

The spelling of 21214220006403 in words is "twenty-one trillion, two hundred fourteen billion, two hundred twenty million, six thousand, four hundred three".