213211321222 has 4 divisors (see below), whose sum is σ = 319816981836. Its totient is φ = 106605660610.

The previous prime is 213211321171. The next prime is 213211321237. The reversal of 213211321222 is 222123112312.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 213211321193 and 213211321202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53302830304 + ... + 53302830307.

It is an arithmetic number, because the mean of its divisors is an integer number (79954245459).

Almost surely, 2^213211321222 is an apocalyptic number.

213211321222 is a deficient number, since it is larger than the sum of its proper divisors (106605660614).

213211321222 is a wasteful number, since it uses less digits than its factorization.

213211321222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106605660613.

The product of its digits is 576, while the sum is 22.

Adding to 213211321222 its reverse (222123112312), we get a palindrome (435334433534).

The spelling of 213211321222 in words is "two hundred thirteen billion, two hundred eleven million, three hundred twenty-one thousand, two hundred twenty-two".