213406222064 has 20 divisors (see below), whose sum is σ = 472542349104. Its totient is φ = 91459809408.

The previous prime is 213406222063. The next prime is 213406222079. The reversal of 213406222064 is 460222604312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 213406222064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213406222061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952706237 + ... + 952706460.

Almost surely, 2^213406222064 is an apocalyptic number.

It is an amenable number.

213406222064 is an abundant number, since it is smaller than the sum of its proper divisors (259136127040).

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

213406222064 is a wasteful number, since it uses less digits than its factorization.

213406222064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905412712 (or 1905412706 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 213406222064 its reverse (460222604312), we get a palindrome (673628826376).

The spelling of 213406222064 in words is "two hundred thirteen billion, four hundred six million, two hundred twenty-two thousand, sixty-four".