4021212344044 has 12 divisors (see below), whose sum is σ = 8042424688144. Its totient is φ = 1723376718864.

The previous prime is 4021212344027. The next prime is 4021212344077. The reversal of 4021212344044 is 4404432121204.

It is a happy number.

4021212344044 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 4021212343997 and 4021212344015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71807363259 + ... + 71807363314.

Almost surely, 2^{4021212344044} is an apocalyptic number.

It is an amenable number.

4021212344044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4021212344044 is a wasteful number, since it uses less digits than its factorization.

4021212344044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143614726584 (or 143614726582 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 4021212344044 its reverse (4404432121204), we get a palindrome (8425644465248).

The spelling of 4021212344044 in words is "four trillion, twenty-one billion, two hundred twelve million, three hundred forty-four thousand, forty-four".