202221020110020 has 48 divisors (see below), whose sum is σ = 566222956414080. Its totient is φ = 53925214876416.

The previous prime is 202221020109959. The next prime is 202221020110061. The reversal of 202221020110020 is 20011020122202.

It is a super-2 number, since 2×202221020110020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3799912 + ... + 20466591.

It is an arithmetic number, because the mean of its divisors is an integer number (11796311591960).

Almost surely, 2^{202221020110020} is an apocalyptic number.

202221020110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202221020110020 is an abundant number, since it is smaller than the sum of its proper divisors (364001936304060).

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

202221020110020 is a wasteful number, since it uses less digits than its factorization.

202221020110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24405404 (or 24405402 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202221020110020 its reverse (20011020122202), we get a palindrome (222232040232222).

The spelling of 202221020110020 in words is "two hundred two trillion, two hundred twenty-one billion, twenty million, one hundred ten thousand, twenty".