221341420220 has 24 divisors (see below), whose sum is σ = 467895247008. Its totient is φ = 87950232000.

The previous prime is 221341420219. The next prime is 221341420259. The reversal of 221341420220 is 22024143122.

221341420220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 36642911 + ... + 36648950.

It is an arithmetic number, because the mean of its divisors is an integer number (19495635292).

Almost surely, 2^221341420220 is an apocalyptic number.

221341420220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221341420220 is an abundant number, since it is smaller than the sum of its proper divisors (246553826788).

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

221341420220 is a wasteful number, since it uses less digits than its factorization.

221341420220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73292021 (or 73292019 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 221341420220 its reverse (22024143122), we get a palindrome (243365563342).

The spelling of 221341420220 in words is "two hundred twenty-one billion, three hundred forty-one million, four hundred twenty thousand, two hundred twenty".