21433420120 has 64 divisors (see below), whose sum is σ = 55131678720. Its totient is φ = 7346312064.

The previous prime is 21433420097. The next prime is 21433420153. The reversal of 21433420120 is 2102433412.

It is a junction number, because it is equal to n+sod(n) for n = 21433420091 and 21433420100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1060429 + ... + 1080451.

It is an arithmetic number, because the mean of its divisors is an integer number (861432480).

Almost surely, 2^21433420120 is an apocalyptic number.

21433420120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21433420120 is an abundant number, since it is smaller than the sum of its proper divisors (33698258600).

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

21433420120 is a wasteful number, since it uses less digits than its factorization.

21433420120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23864 (or 23860 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21433420120 its reverse (2102433412), we get a palindrome (23535853532).

The spelling of 21433420120 in words is "twenty-one billion, four hundred thirty-three million, four hundred twenty thousand, one hundred twenty".