2221002020 has 24 divisors (see below), whose sum is σ = 4668304704. Its totient is φ = 887600736.

The previous prime is 2221002013. The next prime is 2221002029. The reversal of 2221002020 is 202001222.

It is a junction number, because it is equal to n+sod(n) for n = 2221001992 and 2221002010.

It is not an unprimeable number, because it can be changed into a prime (2221002029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26984 + ... + 71903.

It is an arithmetic number, because the mean of its divisors is an integer number (194512696).

Almost surely, 2^2221002020 is an apocalyptic number.

2221002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221002020 is an abundant number, since it is smaller than the sum of its proper divisors (2447302684).

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

2221002020 is a wasteful number, since it uses less digits than its factorization.

2221002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100019 (or 100017 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2221002020 is about 47127.5081030177. The cubic root of 2221002020 is about 1304.7169901504.

Adding to 2221002020 its reverse (202001222), we get a palindrome (2423003242).

The spelling of 2221002020 in words is "two billion, two hundred twenty-one million, two thousand, twenty".