43221421002 has 16 divisors (see below), whose sum is σ = 86475021120. Its totient is φ = 14401777152.

The previous prime is 43221420901. The next prime is 43221421003. The reversal of 43221421002 is 20012412234.

It is a self number, because there is not a number n which added to its sum of digits gives 43221421002.

It is not an unprimeable number, because it can be changed into a prime (43221421003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1323318 + ... + 1355585.

It is an arithmetic number, because the mean of its divisors is an integer number (5404688820).

Almost surely, 2^43221421002 is an apocalyptic number.

43221421002 is an abundant number, since it is smaller than the sum of its proper divisors (43253600118).

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

43221421002 is a wasteful number, since it uses less digits than its factorization.

43221421002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681597.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 43221421002 its reverse (20012412234), we get a palindrome (63233833236).

The spelling of 43221421002 in words is "forty-three billion, two hundred twenty-one million, four hundred twenty-one thousand, two".