2021220102 has 16 divisors (see below), whose sum is σ = 4409934912. Its totient is φ = 612490920.

The previous prime is 2021220079. The next prime is 2021220109. The reversal of 2021220102 is 2010221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021220109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15312208 + ... + 15312339.

It is an arithmetic number, because the mean of its divisors is an integer number (275620932).

Almost surely, 2^2021220102 is an apocalyptic number.

2021220102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2021220102 is an abundant number, since it is smaller than the sum of its proper divisors (2388714810).

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

2021220102 is a wasteful number, since it uses less digits than its factorization.

2021220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30624563.

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

The square root of 2021220102 is about 44957.9815160779. The cubic root of 2021220102 is about 1264.3613250759.

Adding to 2021220102 its reverse (2010221202), we get a palindrome (4031441304).

The spelling of 2021220102 in words is "two billion, twenty-one million, two hundred twenty thousand, one hundred two".