4021221033100 has 72 divisors (see below), whose sum is σ = 8741388015360. Its totient is φ = 1605662498880.

The previous prime is 4021221033079. The next prime is 4021221033101. The reversal of 4021221033100 is 13301221204.

It is a happy number.

It is a super-2 number, since 2×4021221033100² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4021221033101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 319569409 + ... + 319581991.

It is an arithmetic number, because the mean of its divisors is an integer number (121408166880).

Almost surely, 2^{4021221033100} is an apocalyptic number.

It is an amenable number.

4021221033100 is an abundant number, since it is smaller than the sum of its proper divisors (4720166982260).

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

4021221033100 is a wasteful number, since it uses less digits than its factorization.

4021221033100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17959 (or 17952 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 4021221033100 its reverse (13301221204), we get a palindrome (4034522254304).

The spelling of 4021221033100 in words is "four trillion, twenty-one billion, two hundred twenty-one million, thirty-three thousand, one hundred".