20111101121122 has 24 divisors (see below), whose sum is σ = 33230313001116. Its totient is φ = 9121580028000.

The previous prime is 20111101121113. The next prime is 20111101121147. The reversal of 20111101121122 is 22112110111102.

It can be written as a sum of positive squares in 2 ways, for example, as 19611621107001 + 499480014121 = 4428501^2 + 706739^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20111101121096 and 20111101121105.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90022629 + ... + 90245752.

Almost surely, 2^{20111101121122} is an apocalyptic number.

20111101121122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20111101121122 is a deficient number, since it is larger than the sum of its proper divisors (13119211879994).

20111101121122 is a wasteful number, since it uses less digits than its factorization.

20111101121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180268866 (or 180268855 counting only the distinct ones).

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

Adding to 20111101121122 its reverse (22112110111102), we get a palindrome (42223211232224).

The spelling of 20111101121122 in words is "twenty trillion, one hundred eleven billion, one hundred one million, one hundred twenty-one thousand, one hundred twenty-two".