213012212322 has 64 divisors (see below), whose sum is σ = 530975047680. Its totient is φ = 55467906624.

The previous prime is 213012212291. The next prime is 213012212323. The reversal of 213012212322 is 223212210312.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (213012212323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2426058 + ... + 2512325.

It is an arithmetic number, because the mean of its divisors is an integer number (8296485120).

Almost surely, 2^213012212322 is an apocalyptic number.

213012212322 is an abundant number, since it is smaller than the sum of its proper divisors (317962835358).

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

213012212322 is a wasteful number, since it uses less digits than its factorization.

213012212322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4938487.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 213012212322 its reverse (223212210312), we get a palindrome (436224422634).

The spelling of 213012212322 in words is "two hundred thirteen billion, twelve million, two hundred twelve thousand, three hundred twenty-two".