211242203314442 has 4 divisors (see below), whose sum is σ = 316863304971666. Its totient is φ = 105621101657220.

The previous prime is 211242203314379. The next prime is 211242203314447. The reversal of 211242203314442 is 244413302242112.

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., 210994188358321 + 248014956121 = 14525639^2 + 498011^2 .

It is a super-2 number, since 2×211242203314442² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211242203314447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52810550828609 + ... + 52810550828612.

Almost surely, 2^{211242203314442} is an apocalyptic number.

211242203314442 is a deficient number, since it is larger than the sum of its proper divisors (105621101657224).

211242203314442 is a wasteful number, since it uses less digits than its factorization.

211242203314442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105621101657223.

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 211242203314442 its reverse (244413302242112), we get a palindrome (455655505556554).

The spelling of 211242203314442 in words is "two hundred eleven trillion, two hundred forty-two billion, two hundred three million, three hundred fourteen thousand, four hundred forty-two".