2021022020220 has 96 divisors (see below), whose sum is σ = 6467479603200. Its totient is φ = 461932952064.

The previous prime is 2021022020203. The next prime is 2021022020221. The reversal of 2021022020220 is 220202201202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2021022020220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021022020221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17822461 + ... + 17935499.

It is an arithmetic number, because the mean of its divisors is an integer number (67369579200).

Almost surely, 2^{2021022020220} is an apocalyptic number.

2021022020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021022020220 is an abundant number, since it is smaller than the sum of its proper divisors (4446457582980).

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

2021022020220 is a wasteful number, since it uses less digits than its factorization.

2021022020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155627 (or 155625 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 2021022020220 its reverse (220202201202), we get a palindrome (2241224221422).

The spelling of 2021022020220 in words is "two trillion, twenty-one billion, twenty-two million, twenty thousand, two hundred twenty".