2211220020 has 48 divisors (see below), whose sum is σ = 6194885760. Its totient is φ = 589328256.

The previous prime is 2211220007. The next prime is 2211220031. The reversal of 2211220020 is 200221122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2211219978 and 2211220005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109041 + ... + 127719.

It is an arithmetic number, because the mean of its divisors is an integer number (129060120).

Almost surely, 2^2211220020 is an apocalyptic number.

2211220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211220020 is an abundant number, since it is smaller than the sum of its proper divisors (3983665740).

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

2211220020 is a wasteful number, since it uses less digits than its factorization.

2211220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20664 (or 20662 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2211220020 is about 47023.6113032591. The cubic root of 2211220020 is about 1302.7987081432.

Adding to 2211220020 its reverse (200221122), we get a palindrome (2411441142).

The spelling of 2211220020 in words is "two billion, two hundred eleven million, two hundred twenty thousand, twenty".