4021434331012 has 36 divisors (see below), whose sum is σ = 8186605789404. Its totient is φ = 1723447756800.

The previous prime is 4021434331001. The next prime is 4021434331049. The reversal of 4021434331012 is 2101334341204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1144014211396 + 2877420119616 = 1069586^2 + 1696296^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

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 11 ways as a sum of consecutive naturals, for example, 26521012 + ... + 26672212.

Almost surely, 2^{4021434331012} is an apocalyptic number.

It is an amenable number.

4021434331012 is an abundant number, since it is smaller than the sum of its proper divisors (4165171458392).

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

4021434331012 is a wasteful number, since it uses less digits than its factorization.

4021434331012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286916 (or 286907 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 4021434331012 its reverse (2101334341204), we get a palindrome (6122768672216).

The spelling of 4021434331012 in words is "four trillion, twenty-one billion, four hundred thirty-four million, three hundred thirty-one thousand, twelve".