213220221402 has 16 divisors (see below), whose sum is σ = 426956100192. Its totient is φ = 70987464240.

The previous prime is 213220221373. The next prime is 213220221427. The reversal of 213220221402 is 204122022312.

213220221402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21480349 + ... + 21490272.

It is an arithmetic number, because the mean of its divisors is an integer number (26684756262).

Almost surely, 2^213220221402 is an apocalyptic number.

213220221402 is an abundant number, since it is smaller than the sum of its proper divisors (213735878790).

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

213220221402 is a wasteful number, since it uses less digits than its factorization.

213220221402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42971453.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 213220221402 its reverse (204122022312), we get a palindrome (417342243714).

The spelling of 213220221402 in words is "two hundred thirteen billion, two hundred twenty million, two hundred twenty-one thousand, four hundred two".