221002020122020 has 48 divisors (see below), whose sum is σ = 488532074284800. Its totient is φ = 83747912290560.

The previous prime is 221002020122011. The next prime is 221002020122063. The reversal of 221002020122020 is 20221020200122.

It is a junction number, because it is equal to n+sod(n) for n = 221002020121985 and 221002020122003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252655176 + ... + 253528384.

It is an arithmetic number, because the mean of its divisors is an integer number (10177751547600).

Almost surely, 2^{221002020122020} is an apocalyptic number.

221002020122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221002020122020 is an abundant number, since it is smaller than the sum of its proper divisors (267530054162780).

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

221002020122020 is a wasteful number, since it uses less digits than its factorization.

221002020122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539268 (or 1539266 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221002020122020 its reverse (20221020200122), we get a palindrome (241223040322142).

The spelling of 221002020122020 in words is "two hundred twenty-one trillion, two billion, twenty million, one hundred twenty-two thousand, twenty".