211313322442 has 4 divisors (see below), whose sum is σ = 316969983666. Its totient is φ = 105656661220.

The previous prime is 211313322421. The next prime is 211313322487. The reversal of 211313322442 is 244223313112.

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

It can be written as a sum of positive squares in only one way, i.e., 188539192521 + 22774129921 = 434211^2 + 150911^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211313322442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52828330609 + ... + 52828330612.

Almost surely, 2^211313322442 is an apocalyptic number.

211313322442 is a deficient number, since it is larger than the sum of its proper divisors (105656661224).

211313322442 is a wasteful number, since it uses less digits than its factorization.

211313322442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105656661223.

The product of its digits is 6912, while the sum is 28.

Adding to 211313322442 its reverse (244223313112), we get a palindrome (455536635554).

The spelling of 211313322442 in words is "two hundred eleven billion, three hundred thirteen million, three hundred twenty-two thousand, four hundred forty-two".