122388781250 has 42 divisors (see below), whose sum is σ = 229592041653. Its totient is φ = 48930775000.

The previous prime is 122388781217. The next prime is 122388781271. The reversal of 122388781250 is 52187883221.

It can be written as a sum of positive squares in 4 ways, for example, as 20870714089 + 101518067161 = 144467^2 + 318619^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=247375.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122388781195 and 122388781204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 61842761 + ... + 61844739.

Almost surely, 2^122388781250 is an apocalyptic number.

122388781250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122388781250 is a deficient number, since it is larger than the sum of its proper divisors (107203260403).

122388781250 is an frugal number, since it uses more digits than its factorization.

122388781250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990 (or 1986 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 122388781250 in words is "one hundred twenty-two billion, three hundred eighty-eight million, seven hundred eighty-one thousand, two hundred fifty".