221201220003020 has 24 divisors (see below), whose sum is σ = 464522848561968. Its totient is φ = 88480433419200.

The previous prime is 221201220003007. The next prime is 221201220003041. The reversal of 221201220003020 is 20300022102122.

It is a self number, because there is not a number n which added to its sum of digits gives 221201220003020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50944190 + ... + 55115450.

It is an arithmetic number, because the mean of its divisors is an integer number (19355118690082).

Almost surely, 2^{221201220003020} is an apocalyptic number.

221201220003020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221201220003020 is an abundant number, since it is smaller than the sum of its proper divisors (243321628558948).

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

221201220003020 is a wasteful number, since it uses less digits than its factorization.

221201220003020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6822761 (or 6822759 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 221201220003020 its reverse (20300022102122), we get a palindrome (241501242105142).

The spelling of 221201220003020 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred twenty million, three thousand, twenty".