720203221021111 has 16 divisors (see below), whose sum is σ = 795724435433664. Its totient is φ = 648366129731584.

The previous prime is 720203221021103. The next prime is 720203221021129. The reversal of 720203221021111 is 111120122302027.

720203221021111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 720203221021111 - 2³ = 720203221021103 is a prime.

It is a super-2 number, since 2×720203221021111² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720203221021181) 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, 462132075 + ... + 463687891.

It is an arithmetic number, because the mean of its divisors is an integer number (49732777214604).

Almost surely, 2^{720203221021111} is an apocalyptic number.

720203221021111 is a deficient number, since it is larger than the sum of its proper divisors (75521214412553).

720203221021111 is a wasteful number, since it uses less digits than its factorization.

720203221021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739770.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 720203221021111 its reverse (111120122302027), we get a palindrome (831323343323138).

The spelling of 720203221021111 in words is "seven hundred twenty trillion, two hundred three billion, two hundred twenty-one million, twenty-one thousand, one hundred eleven".