20122200012020 has 12 divisors (see below), whose sum is σ = 42256620025284. Its totient is φ = 8048880004800.

The previous prime is 20122200012001. The next prime is 20122200012023. The reversal of 20122200012020 is 2021000222102.

It can be written as a sum of positive squares in 2 ways, for example, as 4743849529444 + 15378350482576 = 2178038^2 + 3921524^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20122200011986 and 20122200012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122200012023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503055000281 + ... + 503055000320.

It is an arithmetic number, because the mean of its divisors is an integer number (3521385002107).

Almost surely, 2^{20122200012020} is an apocalyptic number.

20122200012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122200012020 is an abundant number, since it is smaller than the sum of its proper divisors (22134420013264).

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

20122200012020 is a wasteful number, since it uses less digits than its factorization.

20122200012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006110000610 (or 1006110000608 counting only the distinct ones).

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

Adding to 20122200012020 its reverse (2021000222102), we get a palindrome (22143200234122).

The spelling of 20122200012020 in words is "twenty trillion, one hundred twenty-two billion, two hundred million, twelve thousand, twenty".