4021221010340 has 48 divisors (see below), whose sum is σ = 8736330859200. Its totient is φ = 1552921087872.

The previous prime is 4021221010319. The next prime is 4021221010363. The reversal of 4021221010340 is 430101221204.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 8908367 + ... + 9348873.

It is an arithmetic number, because the mean of its divisors is an integer number (182006892900).

Almost surely, 2^{4021221010340} is an apocalyptic number.

It is an amenable number.

4021221010340 is an abundant number, since it is smaller than the sum of its proper divisors (4715109848860).

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

4021221010340 is a wasteful number, since it uses less digits than its factorization.

4021221010340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456284 (or 456282 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 4021221010340 its reverse (430101221204), we get a palindrome (4451322231544).

The spelling of 4021221010340 in words is "four trillion, twenty-one billion, two hundred twenty-one million, ten thousand, three hundred forty".