221010121112020 has 24 divisors (see below), whose sum is σ = 471048437238624. Its totient is φ = 87084585034656.

The previous prime is 221010121112003. The next prime is 221010121112021. The reversal of 221010121112020 is 20211121010122.

It is a junction number, because it is equal to n+sod(n) for n = 221010121111985 and 221010121112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221010121112021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82466461762 + ... + 82466464441.

It is an arithmetic number, because the mean of its divisors is an integer number (19627018218276).

Almost surely, 2^{221010121112020} is an apocalyptic number.

221010121112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221010121112020 is an abundant number, since it is smaller than the sum of its proper divisors (250038316126604).

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

221010121112020 is a wasteful number, since it uses less digits than its factorization.

221010121112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164932926279 (or 164932926277 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221010121112020 its reverse (20211121010122), we get a palindrome (241221242122142).

The spelling of 221010121112020 in words is "two hundred twenty-one trillion, ten billion, one hundred twenty-one million, one hundred twelve thousand, twenty".