2102322220020 has 288 divisors, whose sum is σ = 7214189149440. Its totient is φ = 491063316480.

The previous prime is 2102322220007. The next prime is 2102322220021. The reversal of 2102322220020 is 200222232012.

2102322220020 is a `hidden beast` number, since 2 + 102 + 322 + 220 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2102322219975 and 2102322220002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102322220021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7406476 + ... + 7685084.

It is an arithmetic number, because the mean of its divisors is an integer number (25049267880).

Almost surely, 2^{2102322220020} is an apocalyptic number.

2102322220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102322220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3607094574720).

2102322220020 is an abundant number, since it is smaller than the sum of its proper divisors (5111866929420).

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

2102322220020 is a wasteful number, since it uses less digits than its factorization.

2102322220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278775 (or 278770 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 2102322220020 its reverse (200222232012), we get a palindrome (2302544452032).

The spelling of 2102322220020 in words is "two trillion, one hundred two billion, three hundred twenty-two million, two hundred twenty thousand, twenty".