211153422442 has 16 divisors (see below), whose sum is σ = 327982579200. Its totient is φ = 101833245360.

The previous prime is 211153422421. The next prime is 211153422481. The reversal of 211153422442 is 244224351112.

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 in 7 ways as a sum of consecutive naturals, for example, 1779342 + ... + 1894297.

It is an arithmetic number, because the mean of its divisors is an integer number (20498911200).

Almost surely, 2^211153422442 is an apocalyptic number.

211153422442 is a deficient number, since it is larger than the sum of its proper divisors (116829156758).

211153422442 is a wasteful number, since it uses less digits than its factorization.

211153422442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674661.

The product of its digits is 15360, while the sum is 31.

Adding to 211153422442 its reverse (244224351112), we get a palindrome (455377773554).

The spelling of 211153422442 in words is "two hundred eleven billion, one hundred fifty-three million, four hundred twenty-two thousand, four hundred forty-two".