4021221012396 has 48 divisors (see below), whose sum is σ = 10723516237056. Its totient is φ = 1148892410304.

The previous prime is 4021221012383. The next prime is 4021221012427. The reversal of 4021221012396 is 6932101221204.

4021221012396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×4021221012396² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3034690 + ... + 4153526.

It is an arithmetic number, because the mean of its divisors is an integer number (223406588272).

Almost surely, 2^{4021221012396} is an apocalyptic number.

It is an amenable number.

4021221012396 is an abundant number, since it is smaller than the sum of its proper divisors (6702295224660).

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

4021221012396 is a wasteful number, since it uses less digits than its factorization.

4021221012396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161638 (or 1161636 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 4021221012396 in words is "four trillion, twenty-one billion, two hundred twenty-one million, twelve thousand, three hundred ninety-six".