20022112121113 has 4 divisors (see below), whose sum is σ = 20024881821540. Its totient is φ = 20019342420688.

The previous prime is 20022112121101. The next prime is 20022112121159. The reversal of 20022112121113 is 31112121122002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19941690534544 + 80421586569 = 4465612^2 + 283587^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022112121113 - 2⁹ = 20022112120601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20022112121183) 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, 1384839370 + ... + 1384853827.

It is an arithmetic number, because the mean of its divisors is an integer number (5006220455385).

Almost surely, 2^{20022112121113} is an apocalyptic number.

It is an amenable number.

20022112121113 is a deficient number, since it is larger than the sum of its proper divisors (2769700427).

20022112121113 is an equidigital number, since it uses as much as digits as its factorization.

20022112121113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769700426.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 20022112121113 its reverse (31112121122002), we get a palindrome (51134233243115).

The spelling of 20022112121113 in words is "twenty trillion, twenty-two billion, one hundred twelve million, one hundred twenty-one thousand, one hundred thirteen".