20112222000020 has 24 divisors (see below), whose sum is σ = 42344241193800. Its totient is φ = 8024207848832.

The previous prime is 20112222000007. The next prime is 20112222000043. The reversal of 20112222000020 is 2000022221102.

It can be written as a sum of positive squares in 4 ways, for example, as 40370453776 + 20071851546244 = 200924^2 + 4480162^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20112221999959 and 20112222000004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1292551475 + ... + 1292567034.

It is an arithmetic number, because the mean of its divisors is an integer number (1764343383075).

Almost surely, 2^{20112222000020} is an apocalyptic number.

20112222000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112222000020 is an abundant number, since it is smaller than the sum of its proper divisors (22232019193780).

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

20112222000020 is a wasteful number, since it uses less digits than its factorization.

20112222000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585118907 (or 2585118905 counting only the distinct ones).

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

Adding to 20112222000020 its reverse (2000022221102), we get a palindrome (22112244221122).

The spelling of 20112222000020 in words is "twenty trillion, one hundred twelve billion, two hundred twenty-two million, twenty", and thus it is an aban number.