4021031313012 has 48 divisors (see below), whose sum is σ = 10724499911552. Its totient is φ = 1148678616960.

The previous prime is 4021031312941. The next prime is 4021031313023. The reversal of 4021031313012 is 2103131301204.

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

It is a self number, because there is not a number n which added to its sum of digits gives 4021031313012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3387439 + ... + 4417782.

Almost surely, 2^{4021031313012} is an apocalyptic number.

4021031313012 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

4021031313012 is an abundant number, since it is smaller than the sum of its proper divisors (6703468598540).

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

4021031313012 is a wasteful number, since it uses less digits than its factorization.

4021031313012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7811368 (or 7811366 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 4021031313012 its reverse (2103131301204), we get a palindrome (6124162614216).

The spelling of 4021031313012 in words is "four trillion, twenty-one billion, thirty-one million, three hundred thirteen thousand, twelve".