121703920610 has 16 divisors (see below), whose sum is σ = 219082466232. Its totient is φ = 48678144000.

The previous prime is 121703920577. The next prime is 121703920619. The reversal of 121703920610 is 16029307121.

121703920610 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 51429621961 + 70274298649 = 226781^2 + 265093^2 .

It is not an unprimeable number, because it can be changed into a prime (121703920619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276191 + ... + 565410.

Almost surely, 2^121703920610 is an apocalyptic number.

121703920610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121703920610 is a deficient number, since it is larger than the sum of its proper divisors (97378545622).

121703920610 is a wasteful number, since it uses less digits than its factorization.

121703920610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856069.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 121703920610 in words is "one hundred twenty-one billion, seven hundred three million, nine hundred twenty thousand, six hundred ten".