720110121 has 16 divisors (see below), whose sum is σ = 984688320. Its totient is φ = 467853120.

The previous prime is 720110119. The next prime is 720110161. The reversal of 720110121 is 121011027.

It is not a de Polignac number, because 720110121 - 2¹ = 720110119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 720110121.

It is not an unprimeable number, because it can be changed into a prime (720110161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53415 + ... + 65523.

It is an arithmetic number, because the mean of its divisors is an integer number (61543020).

Almost surely, 2^720110121 is an apocalyptic number.

It is an amenable number.

720110121 is a deficient number, since it is larger than the sum of its proper divisors (264578199).

720110121 is a wasteful number, since it uses less digits than its factorization.

720110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12616.

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 720110121 is about 26834.8676352241. The cubic root of 720110121 is about 896.3266411276.

Adding to 720110121 its reverse (121011027), we get a palindrome (841121148).

The spelling of 720110121 in words is "seven hundred twenty million, one hundred ten thousand, one hundred twenty-one".