221990224740 has 24 divisors (see below), whose sum is σ = 621572629440. Its totient is φ = 59197393248.

The previous prime is 221990224739. The next prime is 221990224763. The reversal of 221990224740 is 47422099122.

221990224740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221990224692 and 221990224701.

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 7 ways as a sum of consecutive naturals, for example, 1849918480 + ... + 1849918599.

It is an arithmetic number, because the mean of its divisors is an integer number (25898859560).

Almost surely, 2^221990224740 is an apocalyptic number.

221990224740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221990224740 is an abundant number, since it is smaller than the sum of its proper divisors (399582404700).

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

221990224740 is a wasteful number, since it uses less digits than its factorization.

221990224740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699837091 (or 3699837089 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 221990224740 in words is "two hundred twenty-one billion, nine hundred ninety million, two hundred twenty-four thousand, seven hundred forty".