211131203242 has 4 divisors (see below), whose sum is σ = 316696804866. Its totient is φ = 105565601620.

The previous prime is 211131203233. The next prime is 211131203243. The reversal of 211131203242 is 242302131112.

211131203242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 150925257081 + 60205946161 = 388491^2 + 245369^2 .

It is a super-2 number, since 2×211131203242² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211131203243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52782800809 + ... + 52782800812.

Almost surely, 2^211131203242 is an apocalyptic number.

211131203242 is a deficient number, since it is larger than the sum of its proper divisors (105565601624).

211131203242 is a wasteful number, since it uses less digits than its factorization.

211131203242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105565601623.

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

Adding to 211131203242 its reverse (242302131112), we get a palindrome (453433334354).

The spelling of 211131203242 in words is "two hundred eleven billion, one hundred thirty-one million, two hundred three thousand, two hundred forty-two".