121722171230 has 32 divisors (see below), whose sum is σ = 242936424288. Its totient is φ = 43536988800.

The previous prime is 121722171229. The next prime is 121722171317. The reversal of 121722171230 is 32171227121.

It is a junction number, because it is equal to n+sod(n) for n = 121722171193 and 121722171202.

It is a congruent number.

It is an unprimeable number.

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, 9063497 + ... + 9076916.

It is an arithmetic number, because the mean of its divisors is an integer number (7591763259).

Almost surely, 2^121722171230 is an apocalyptic number.

121722171230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121722171230 is a deficient number, since it is larger than the sum of its proper divisors (121214253058).

121722171230 is a wasteful number, since it uses less digits than its factorization.

121722171230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18140492.

The product of its (nonzero) digits is 2352, while the sum is 29.

Adding to 121722171230 its reverse (32171227121), we get a palindrome (153893398351).

The spelling of 121722171230 in words is "one hundred twenty-one billion, seven hundred twenty-two million, one hundred seventy-one thousand, two hundred thirty".