20012202221020 has 24 divisors (see below), whose sum is σ = 43852825737504. Its totient is φ = 7656842588736.

The previous prime is 20012202220981. The next prime is 20012202221021. The reversal of 20012202221020 is 2012220221002.

It is a junction number, because it is equal to n+sod(n) for n = 20012202220985 and 20012202221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012202221021) 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, 21752393259 + ... + 21752394178.

It is an arithmetic number, because the mean of its divisors is an integer number (1827201072396).

Almost surely, 2^{20012202221020} is an apocalyptic number.

20012202221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012202221020 is an abundant number, since it is smaller than the sum of its proper divisors (23840623516484).

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

20012202221020 is a wasteful number, since it uses less digits than its factorization.

20012202221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43504787469 (or 43504787467 counting only the distinct ones).

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

Adding to 20012202221020 its reverse (2012220221002), we get a palindrome (22024422442022).

The spelling of 20012202221020 in words is "twenty trillion, twelve billion, two hundred two million, two hundred twenty-one thousand, twenty".