121720550014 has 16 divisors (see below), whose sum is σ = 209161814400. Its totient is φ = 52041446424.

The previous prime is 121720549997. The next prime is 121720550027. The reversal of 121720550014 is 410055027121.

121720550014 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 10369224 + ... + 10380955.

It is an arithmetic number, because the mean of its divisors is an integer number (13072613400).

Almost surely, 2^121720550014 is an apocalyptic number.

121720550014 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121720550014 is a deficient number, since it is larger than the sum of its proper divisors (87441264386).

121720550014 is a wasteful number, since it uses less digits than its factorization.

121720550014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20750607.

The product of its (nonzero) digits is 2800, while the sum is 28.

Adding to 121720550014 its reverse (410055027121), we get a palindrome (531775577135).

The spelling of 121720550014 in words is "one hundred twenty-one billion, seven hundred twenty million, five hundred fifty thousand, fourteen".