161051115222 has 24 divisors (see below), whose sum is σ = 348971921064. Its totient is φ = 53679422304.

The previous prime is 161051115179. The next prime is 161051115229. The reversal of 161051115222 is 222511150161.

It is a happy number.

161051115222 is a `hidden beast` number, since 1 + 610 + 5 + 11 + 15 + 2 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161051115229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120783 + ... + 580250.

It is an arithmetic number, because the mean of its divisors is an integer number (14540496711).

Almost surely, 2^161051115222 is an apocalyptic number.

161051115222 is an abundant number, since it is smaller than the sum of its proper divisors (187920805842).

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

161051115222 is a wasteful number, since it uses less digits than its factorization.

161051115222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713804 (or 713801 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

Adding to 161051115222 its reverse (222511150161), we get a palindrome (383562265383).

The spelling of 161051115222 in words is "one hundred sixty-one billion, fifty-one million, one hundred fifteen thousand, two hundred twenty-two".