80012421020 has 24 divisors (see below), whose sum is σ = 192029810784. Its totient is φ = 27432830016.

The previous prime is 80012421019. The next prime is 80012421031. The reversal of 80012421020 is 2012421008.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 80012420983 and 80012421001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285758507 + ... + 285758786.

It is an arithmetic number, because the mean of its divisors is an integer number (8001242116).

Almost surely, 2^80012421020 is an apocalyptic number.

It is an amenable number.

80012421020 is an abundant number, since it is smaller than the sum of its proper divisors (112017389764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80012421020 is a wasteful number, since it uses less digits than its factorization.

80012421020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571517309 (or 571517307 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 80012421020 its reverse (2012421008), we get a palindrome (82024842028).

The spelling of 80012421020 in words is "eighty billion, twelve million, four hundred twenty-one thousand, twenty".