211229840942 has 4 divisors (see below), whose sum is σ = 316844761416. Its totient is φ = 105614920470.

The previous prime is 211229840879. The next prime is 211229840959. The reversal of 211229840942 is 249048922112.

211229840942 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 is a junction number, because it is equal to n+sod(n) for n = 211229840893 and 211229840902.

It is a congruent number.

It is an unprimeable number.

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, 52807460234 + ... + 52807460237.

It is an arithmetic number, because the mean of its divisors is an integer number (79211190354).

Almost surely, 2^211229840942 is an apocalyptic number.

211229840942 is a deficient number, since it is larger than the sum of its proper divisors (105614920474).

211229840942 is a wasteful number, since it uses less digits than its factorization.

211229840942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105614920473.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 211229840942 in words is "two hundred eleven billion, two hundred twenty-nine million, eight hundred forty thousand, nine hundred forty-two".