221220222203020 has 12 divisors (see below), whose sum is σ = 464562466626384. Its totient is φ = 88488088881200.

The previous prime is 221220222202907. The next prime is 221220222203021. The reversal of 221220222203020 is 20302222022122.

It is a junction number, because it is equal to n+sod(n) for n = 221220222202982 and 221220222203000.

It is not an unprimeable number, because it can be changed into a prime (221220222203021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5530505555056 + ... + 5530505555095.

It is an arithmetic number, because the mean of its divisors is an integer number (38713538885532).

Almost surely, 2^{221220222203020} is an apocalyptic number.

221220222203020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221220222203020 is an abundant number, since it is smaller than the sum of its proper divisors (243342244423364).

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

221220222203020 is a wasteful number, since it uses less digits than its factorization.

221220222203020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11061011110160 (or 11061011110158 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 221220222203020 its reverse (20302222022122), we get a palindrome (241522444225142).

The spelling of 221220222203020 in words is "two hundred twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred three thousand, twenty".