120543345021 has 32 divisors (see below), whose sum is σ = 176203069056. Its totient is φ = 72695808000.

The previous prime is 120543345007. The next prime is 120543345049.

120543345021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 120543345021 - 2²⁵ = 120509790589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120543345021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120543345421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8652141 + ... + 8666061.

It is an arithmetic number, because the mean of its divisors is an integer number (5506345908).

Almost surely, 2^120543345021 is an apocalyptic number.

120543345021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120543345021 is a deficient number, since it is larger than the sum of its proper divisors (55659724035).

120543345021 is a wasteful number, since it uses less digits than its factorization.

120543345021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15213.

The product of its (nonzero) digits is 14400, while the sum is 30.

It can be divided in two parts, 120543 and 345021, that added together give a palindrome (465564).

The spelling of 120543345021 in words is "one hundred twenty billion, five hundred forty-three million, three hundred forty-five thousand, twenty-one".