213221311342 has 16 divisors (see below), whose sum is σ = 345875584320. Its totient is φ = 97998076512.

The previous prime is 213221311333. The next prime is 213221311351. The reversal of 213221311342 is 243113122312.

It is an interprime number because it is at equal distance from previous prime (213221311333) and next prime (213221311351).

It is a super-2 number, since 2×213221311342² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17150313 + ... + 17162740.

It is an arithmetic number, because the mean of its divisors is an integer number (21617224020).

Almost surely, 2^213221311342 is an apocalyptic number.

213221311342 is a deficient number, since it is larger than the sum of its proper divisors (132654272978).

213221311342 is a wasteful number, since it uses less digits than its factorization.

213221311342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34313307.

The product of its digits is 1728, while the sum is 25.

Adding to 213221311342 its reverse (243113122312), we get a palindrome (456334433654).

The spelling of 213221311342 in words is "two hundred thirteen billion, two hundred twenty-one million, three hundred eleven thousand, three hundred forty-two".