221334042020 has 96 divisors (see below), whose sum is σ = 572408460288. Its totient is φ = 70006321152.

The previous prime is 221334042001. The next prime is 221334042047. The reversal of 221334042020 is 20240433122.

It is a super-2 number, since 2×221334042020² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3052709 + ... + 3124371.

It is an arithmetic number, because the mean of its divisors is an integer number (5962588128).

Almost surely, 2^221334042020 is an apocalyptic number.

221334042020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221334042020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286204230144).

221334042020 is an abundant number, since it is smaller than the sum of its proper divisors (351074418268).

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

221334042020 is a wasteful number, since it uses less digits than its factorization.

221334042020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73389 (or 73387 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 221334042020 its reverse (20240433122), we get a palindrome (241574475142).

The spelling of 221334042020 in words is "two hundred twenty-one billion, three hundred thirty-four million, forty-two thousand, twenty".