221020000102220 has 24 divisors (see below), whose sum is σ = 506336727507408. Its totient is φ = 80370909128000.

The previous prime is 221020000102207. The next prime is 221020000102229. The reversal of 221020000102220 is 22201000020122.

It is a junction number, because it is equal to n+sod(n) for n = 221020000102195 and 221020000102204.

It is not an unprimeable number, because it can be changed into a prime (221020000102229) by changing a digit.

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, 502318181831 + ... + 502318182270.

It is an arithmetic number, because the mean of its divisors is an integer number (21097363646142).

Almost surely, 2^{221020000102220} is an apocalyptic number.

221020000102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221020000102220 is an abundant number, since it is smaller than the sum of its proper divisors (285316727405188).

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

221020000102220 is a wasteful number, since it uses less digits than its factorization.

221020000102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004636364121 (or 1004636364119 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221020000102220 its reverse (22201000020122), we get a palindrome (243221000122342).

The spelling of 221020000102220 in words is "two hundred twenty-one trillion, twenty billion, one hundred two thousand, two hundred twenty".