221003022020 has 96 divisors (see below), whose sum is σ = 523118082816. Its totient is φ = 77737587200.

The previous prime is 221003021977. The next prime is 221003022029. The reversal of 221003022020 is 20220300122.

It is a junction number, because it is equal to n+sod(n) for n = 221003021986 and 221003022004.

It is not an unprimeable number, because it can be changed into a prime (221003022029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 694382 + ... + 961338.

It is an arithmetic number, because the mean of its divisors is an integer number (5449146696).

Almost surely, 2^221003022020 is an apocalyptic number.

221003022020 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 221003022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261559041408).

221003022020 is an abundant number, since it is smaller than the sum of its proper divisors (302115060796).

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

221003022020 is a wasteful number, since it uses less digits than its factorization.

221003022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267101 (or 267099 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 221003022020 its reverse (20220300122), we get a palindrome (241223322142).

The spelling of 221003022020 in words is "two hundred twenty-one billion, three million, twenty-two thousand, twenty".