2102221102020 has 48 divisors (see below), whose sum is σ = 6339005171520. Its totient is φ = 517469809536.

The previous prime is 2102221102019. The next prime is 2102221102021. The reversal of 2102221102020 is 202011222012.

It is an interprime number because it is at equal distance from previous prime (2102221102019) and next prime (2102221102021).

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

It is not an unprimeable number, because it can be changed into a prime (2102221102021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1347576850 + ... + 1347578409.

It is an arithmetic number, because the mean of its divisors is an integer number (132062607740).

Almost surely, 2^{2102221102020} is an apocalyptic number.

2102221102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102221102020 is an abundant number, since it is smaller than the sum of its proper divisors (4236784069500).

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

2102221102020 is a wasteful number, since it uses less digits than its factorization.

2102221102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695155284 (or 2695155282 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2102221102020 its reverse (202011222012), we get a palindrome (2304232324032).

The spelling of 2102221102020 in words is "two trillion, one hundred two billion, two hundred twenty-one million, one hundred two thousand, twenty".