121560621700 has 72 divisors (see below), whose sum is σ = 301570976000. Its totient is φ = 41664015360.

The previous prime is 121560621667. The next prime is 121560621709. The reversal of 121560621700 is 7126065121.

It is not an unprimeable number, because it can be changed into a prime (121560621709) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2190901 + ... + 2245699.

Almost surely, 2^121560621700 is an apocalyptic number.

121560621700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121560621700 is an abundant number, since it is smaller than the sum of its proper divisors (180010354300).

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

121560621700 is a wasteful number, since it uses less digits than its factorization.

121560621700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57989 (or 57982 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 121560621700 its reverse (7126065121), we get a palindrome (128686686821).

The spelling of 121560621700 in words is "one hundred twenty-one billion, five hundred sixty million, six hundred twenty-one thousand, seven hundred".