181210122210942 has 96 divisors (see below), whose sum is σ = 439985736328320. Its totient is φ = 53416528608960.

The previous prime is 181210122210941. The next prime is 181210122210959. The reversal of 181210122210942 is 249012221012181.

181210122210942 is a `hidden beast` number, since 1 + 81 + 210 + 1 + 222 + 109 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 181210122210897 and 181210122210906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181210122210941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31350909 + ... + 36678327.

It is an arithmetic number, because the mean of its divisors is an integer number (4583184753420).

Almost surely, 2^{181210122210942} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181210122210942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219992868164160).

181210122210942 is an abundant number, since it is smaller than the sum of its proper divisors (258775614117378).

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

181210122210942 is a wasteful number, since it uses less digits than its factorization.

181210122210942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5332118 (or 5332115 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 181210122210942 in words is "one hundred eighty-one trillion, two hundred ten billion, one hundred twenty-two million, two hundred ten thousand, nine hundred forty-two".