2102220020 has 24 divisors (see below), whose sum is σ = 4470547200. Its totient is φ = 830243232.

The previous prime is 2102219993. The next prime is 2102220023. The reversal of 2102220020 is 200222012.

It is a junction number, because it is equal to n+sod(n) for n = 2102219983 and 2102220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102220023) 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, 663680 + ... + 666839.

It is an arithmetic number, because the mean of its divisors is an integer number (186272800).

Almost surely, 2^2102220020 is an apocalyptic number.

2102220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102220020 is an abundant number, since it is smaller than the sum of its proper divisors (2368327180).

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

2102220020 is a wasteful number, since it uses less digits than its factorization.

2102220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330607 (or 1330605 counting only the distinct ones).

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

The square root of 2102220020 is about 45849.9729552810. The cubic root of 2102220020 is about 1281.0302618365.

Adding to 2102220020 its reverse (200222012), we get a palindrome (2302442032).

The spelling of 2102220020 in words is "two billion, one hundred two million, two hundred twenty thousand, twenty".