2201002020 has 288 divisors, whose sum is σ = 8117770752. Its totient is φ = 471803904.

The previous prime is 2201001991. The next prime is 2201002039. The reversal of 2201002020 is 202001022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2201001993 and 2201002011.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1535224 + ... + 1536656.

It is an arithmetic number, because the mean of its divisors is an integer number (28186704).

Almost surely, 2^2201002020 is an apocalyptic number.

2201002020 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 2201002020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4058885376).

2201002020 is an abundant number, since it is smaller than the sum of its proper divisors (5916768732).

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

2201002020 is a wasteful number, since it uses less digits than its factorization.

2201002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531 (or 1526 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2201002020 is about 46914.8379513348. The cubic root of 2201002020 is about 1300.7888742507.

Adding to 2201002020 its reverse (202001022), we get a palindrome (2403003042).

The spelling of 2201002020 in words is "two billion, two hundred one million, two thousand, twenty".