4021221012306 has 32 divisors (see below), whose sum is σ = 8547920010240. Its totient is φ = 1257530532624.

The previous prime is 4021221012299. The next prime is 4021221012307. The reversal of 4021221012306 is 6032101221204.

It is a super-2 number, since 2×4021221012306² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4021221012307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171220630 + ... + 171244113.

It is an arithmetic number, because the mean of its divisors is an integer number (267122500320).

Almost surely, 2^{4021221012306} is an apocalyptic number.

4021221012306 is an abundant number, since it is smaller than the sum of its proper divisors (4526698997934).

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

4021221012306 is a wasteful number, since it uses less digits than its factorization.

4021221012306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342464870.

The product of its (nonzero) digits is 1152, while the sum is 24.

The spelling of 4021221012306 in words is "four trillion, twenty-one billion, two hundred twenty-one million, twelve thousand, three hundred six".