2100022201020 has 96 divisors (see below), whose sum is σ = 5939568936000. Its totient is φ = 554341017600.

The previous prime is 2100022200989. The next prime is 2100022201031. The reversal of 2100022201020 is 201022200012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2100022200987 and 2100022201005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29858856 + ... + 29929104.

It is an arithmetic number, because the mean of its divisors is an integer number (61870509750).

Almost surely, 2^{2100022201020} is an apocalyptic number.

2100022201020 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 2100022201020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2969784468000).

2100022201020 is an abundant number, since it is smaller than the sum of its proper divisors (3839546734980).

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

2100022201020 is a wasteful number, since it uses less digits than its factorization.

2100022201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75295 (or 75293 counting only the distinct ones).

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

Adding to 2100022201020 its reverse (201022200012), we get a palindrome (2301044401032).

The spelling of 2100022201020 in words is "two trillion, one hundred billion, twenty-two million, two hundred one thousand, twenty".