121340235556 has 12 divisors (see below), whose sum is σ = 212348641792. Its totient is φ = 60669195048.

The previous prime is 121340235491. The next prime is 121340235647. The reversal of 121340235556 is 655532043121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126721 + ... + 508663.

Almost surely, 2^121340235556 is an apocalyptic number.

It is an amenable number.

121340235556 is a deficient number, since it is larger than the sum of its proper divisors (91008406236).

121340235556 is a wasteful number, since it uses less digits than its factorization.

121340235556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461370 (or 461368 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 121340235556 its reverse (655532043121), we get a palindrome (776872278677).

The spelling of 121340235556 in words is "one hundred twenty-one billion, three hundred forty million, two hundred thirty-five thousand, five hundred fifty-six".