121312350052 has 12 divisors (see below), whose sum is σ = 212299726716. Its totient is φ = 60655285280.

The previous prime is 121312350037. The next prime is 121312350059. The reversal of 121312350052 is 250053213121.

It can be written as a sum of positive squares in 2 ways, for example, as 17128003876 + 104184346176 = 130874^2 + 322776^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121312349999 and 121312350026.

It is not an unprimeable number, because it can be changed into a prime (121312350059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155802 + ... + 516622.

It is an arithmetic number, because the mean of its divisors is an integer number (17691643893).

Almost surely, 2^121312350052 is an apocalyptic number.

It is an amenable number.

121312350052 is a deficient number, since it is larger than the sum of its proper divisors (90987376664).

121312350052 is a wasteful number, since it uses less digits than its factorization.

121312350052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444878 (or 444876 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 121312350052 its reverse (250053213121), we get a palindrome (371365563173).

The spelling of 121312350052 in words is "one hundred twenty-one billion, three hundred twelve million, three hundred fifty thousand, fifty-two".