2122220020 has 12 divisors (see below), whose sum is σ = 4456662084. Its totient is φ = 848888000.

The previous prime is 2122220003. The next prime is 2122220047. The reversal of 2122220020 is 200222212.

It can be written as a sum of positive squares in 2 ways, for example, as 1694474896 + 427745124 = 41164^2 + 20682^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53055481 + ... + 53055520.

It is an arithmetic number, because the mean of its divisors is an integer number (371388507).

Almost surely, 2^2122220020 is an apocalyptic number.

2122220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122220020 is an abundant number, since it is smaller than the sum of its proper divisors (2334442064).

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

2122220020 is a wasteful number, since it uses less digits than its factorization.

2122220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106111010 (or 106111008 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2122220020 is about 46067.5593015302. The cubic root of 2122220020 is about 1285.0799144837.

Adding to 2122220020 its reverse (200222212), we get a palindrome (2322442232).

The spelling of 2122220020 in words is "two billion, one hundred twenty-two million, two hundred twenty thousand, twenty".