211835122104156 has 48 divisors (see below), whose sum is σ = 496718230071840. Its totient is φ = 70264337541120.

The previous prime is 211835122104119. The next prime is 211835122104157. The reversal of 211835122104156 is 651401221538112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211835122104157) 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 in 15 ways as a sum of consecutive naturals, for example, 39342301 + ... + 44401428.

It is an arithmetic number, because the mean of its divisors is an integer number (10348296459830).

Almost surely, 2^{211835122104156} is an apocalyptic number.

It is an amenable number.

211835122104156 is an abundant number, since it is smaller than the sum of its proper divisors (284883107967684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211835122104156 is a wasteful number, since it uses less digits than its factorization.

211835122104156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83744774 (or 83744772 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 211835122104156 in words is "two hundred eleven trillion, eight hundred thirty-five billion, one hundred twenty-two million, one hundred four thousand, one hundred fifty-six".