211242222554 has 16 divisors (see below), whose sum is σ = 349091561376. Its totient is φ = 95068506000.

The previous prime is 211242222551. The next prime is 211242222599. The reversal of 211242222554 is 455222242112.

It is a self number, because there is not a number n which added to its sum of digits gives 211242222554.

It is not an unprimeable number, because it can be changed into a prime (211242222551) by changing a digit.

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, 47532032 + ... + 47536475.

It is an arithmetic number, because the mean of its divisors is an integer number (21818222586).

Almost surely, 2^211242222554 is an apocalyptic number.

211242222554 is a deficient number, since it is larger than the sum of its proper divisors (137849338822).

211242222554 is a wasteful number, since it uses less digits than its factorization.

211242222554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95068621.

The product of its digits is 25600, while the sum is 32.

Adding to 211242222554 its reverse (455222242112), we get a palindrome (666464464666).

The spelling of 211242222554 in words is "two hundred eleven billion, two hundred forty-two million, two hundred twenty-two thousand, five hundred fifty-four".