2221731903020 has 48 divisors (see below), whose sum is σ = 5333921445888. Its totient is φ = 761484527040.

The previous prime is 2221731903011. The next prime is 2221731903023. The reversal of 2221731903020 is 203091371222.

It is not an unprimeable number, because it can be changed into a prime (2221731903023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2201576 + ... + 3048015.

It is an arithmetic number, because the mean of its divisors is an integer number (111123363456).

Almost surely, 2^{2221731903020} is an apocalyptic number.

2221731903020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221731903020 is an abundant number, since it is smaller than the sum of its proper divisors (3112189542868).

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

2221731903020 is a wasteful number, since it uses less digits than its factorization.

2221731903020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5252630 (or 5252628 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 2221731903020 in words is "two trillion, two hundred twenty-one billion, seven hundred thirty-one million, nine hundred three thousand, twenty".