2221621482220 has 48 divisors (see below), whose sum is σ = 5348711511360. Its totient is φ = 759295943424.

The previous prime is 2221621482071. The next prime is 2221621482233. The reversal of 2221621482220 is 222841261222.

It is a super-2 number, since 2×2221621482220² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24985155 + ... + 25073914.

It is an arithmetic number, because the mean of its divisors is an integer number (111431489820).

Almost surely, 2^{2221621482220} is an apocalyptic number.

2221621482220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221621482220 is an abundant number, since it is smaller than the sum of its proper divisors (3127090029140).

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

2221621482220 is a wasteful number, since it uses less digits than its factorization.

2221621482220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50059402 (or 50059400 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The spelling of 2221621482220 in words is "two trillion, two hundred twenty-one billion, six hundred twenty-one million, four hundred eighty-two thousand, two hundred twenty".