20001100211122 has 12 divisors (see below), whose sum is σ = 30193960860090. Its totient is φ = 9936852309696.

The previous prime is 20001100211107. The next prime is 20001100211123. The reversal of 20001100211122 is 22111200110002.

It can be written as a sum of positive squares in 3 ways, for example, as 7461633096801 + 12539467114321 = 2731599^2 + 3541111^2 .

It is not an unprimeable number, because it can be changed into a prime (20001100211123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202809847 + ... + 202908442.

Almost surely, 2^{20001100211122} is an apocalyptic number.

20001100211122 is a deficient number, since it is larger than the sum of its proper divisors (10192860648968).

20001100211122 is an equidigital number, since it uses as much as digits as its factorization.

20001100211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405718605 (or 405718448 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20001100211122 its reverse (22111200110002), we get a palindrome (42112300321124).

The spelling of 20001100211122 in words is "twenty trillion, one billion, one hundred million, two hundred eleven thousand, one hundred twenty-two".