2221021020100 has 72 divisors (see below), whose sum is σ = 5104160375328. Its totient is φ = 835979020800.

The previous prime is 2221021020017. The next prime is 2221021020137. The reversal of 2221021020100 is 10201201222.

It is a happy number.

2221021020100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8388339 + ... + 8649061.

It is an arithmetic number, because the mean of its divisors is an integer number (70891116324).

Almost surely, 2^{2221021020100} is an apocalyptic number.

2221021020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221021020100 is an abundant number, since it is smaller than the sum of its proper divisors (2883139355228).

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

2221021020100 is a wasteful number, since it uses less digits than its factorization.

2221021020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265765 (or 265758 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2221021020100 its reverse (10201201222), we get a palindrome (2231222221322).

The spelling of 2221021020100 in words is "two trillion, two hundred twenty-one billion, twenty-one million, twenty thousand, one hundred".