123221220130 has 8 divisors (see below), whose sum is σ = 221798196252. Its totient is φ = 49288488048.

The previous prime is 123221220113. The next prime is 123221220149. The reversal of 123221220130 is 31022122321.

It can be written as a sum of positive squares in 2 ways, for example, as 120173848921 + 3047371209 = 346661^2 + 55203^2 .

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 = 123221220098 and 123221220107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6161060997 + ... + 6161061016.

Almost surely, 2^123221220130 is an apocalyptic number.

123221220130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123221220130 is a deficient number, since it is larger than the sum of its proper divisors (98576976122).

123221220130 is a wasteful number, since it uses less digits than its factorization.

123221220130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12322122020.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 123221220130 its reverse (31022122321), we get a palindrome (154243342451).

The spelling of 123221220130 in words is "one hundred twenty-three billion, two hundred twenty-one million, two hundred twenty thousand, one hundred thirty".