43303220121 has 16 divisors (see below), whose sum is σ = 66120265728. Its totient is φ = 24694294800.

The previous prime is 43303220113. The next prime is 43303220143. The reversal of 43303220121 is 12102230334.

It is not a de Polignac number, because 43303220121 - 2³ = 43303220113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (43303220171) 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, 2089545 + ... + 2110166.

It is an arithmetic number, because the mean of its divisors is an integer number (4132516608).

Almost surely, 2^43303220121 is an apocalyptic number.

It is an amenable number.

43303220121 is a deficient number, since it is larger than the sum of its proper divisors (22817045607).

43303220121 is a wasteful number, since it uses less digits than its factorization.

43303220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4200212.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 43303220121 its reverse (12102230334), we get a palindrome (55405450455).

The spelling of 43303220121 in words is "forty-three billion, three hundred three million, two hundred twenty thousand, one hundred twenty-one".