121111232221312 has 64 divisors (see below), whose sum is σ = 244237558383000. Its totient is φ = 59816884838400.

The previous prime is 121111232221279. The next prime is 121111232221321. The reversal of 121111232221312 is 213122232111121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36445175816256 + 84666056405056 = 6036984^2 + 9201416^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14089989 + ... + 20994052.

Almost surely, 2^{121111232221312} is an apocalyptic number.

It is an amenable number.

121111232221312 is an abundant number, since it is smaller than the sum of its proper divisors (123126326161688).

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

121111232221312 is a wasteful number, since it uses less digits than its factorization.

121111232221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35084385 (or 35084373 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

Adding to 121111232221312 its reverse (213122232111121), we get a palindrome (334233464332433).

The spelling of 121111232221312 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred thirty-two million, two hundred twenty-one thousand, three hundred twelve".