181120021222 has 8 divisors (see below), whose sum is σ = 310491464976. Its totient is φ = 77622866232.

The previous prime is 181120021193. The next prime is 181120021241. The reversal of 181120021222 is 222120021181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 181120021193 and 181120021202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6468572173 + ... + 6468572200.

It is an arithmetic number, because the mean of its divisors is an integer number (38811433122).

Almost surely, 2^181120021222 is an apocalyptic number.

181120021222 is a deficient number, since it is larger than the sum of its proper divisors (129371443754).

181120021222 is a wasteful number, since it uses less digits than its factorization.

181120021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12937144382.

The product of its (nonzero) digits is 256, while the sum is 22.

The spelling of 181120021222 in words is "one hundred eighty-one billion, one hundred twenty million, twenty-one thousand, two hundred twenty-two".