108067020421 has 4 divisors (see below), whose sum is σ = 108068896972. Its totient is φ = 108065143872.

The previous prime is 108067020407. The next prime is 108067020437. The reversal of 108067020421 is 124020760801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124020760801 = 7 ⋅17717251543.

It can be written as a sum of positive squares in 2 ways, for example, as 41989747396 + 66077273025 = 204914^2 + 257055^2 .

It is a cyclic number.

It is not a de Polignac number, because 108067020421 - 2⁵ = 108067020389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108007020421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849066 + ... + 968011.

It is an arithmetic number, because the mean of its divisors is an integer number (27017224243).

Almost surely, 2^108067020421 is an apocalyptic number.

It is an amenable number.

108067020421 is a deficient number, since it is larger than the sum of its proper divisors (1876551).

108067020421 is an equidigital number, since it uses as much as digits as its factorization.

108067020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876550.

The product of its (nonzero) digits is 5376, while the sum is 31.

The spelling of 108067020421 in words is "one hundred eight billion, sixty-seven million, twenty thousand, four hundred twenty-one".