20011101122105 has 16 divisors (see below), whose sum is σ = 24317512830720. Its totient is φ = 15806090332032.

The previous prime is 20011101122099. The next prime is 20011101122119. The reversal of 20011101122105 is 50122110111002.

It is a cyclic number.

It is not a de Polignac number, because 20011101122105 - 2³² = 20006806154809 is a prime.

It is a super-2 number, since 2×20011101122105² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66204077 + ... + 66505653.

It is an arithmetic number, because the mean of its divisors is an integer number (1519844551920).

Almost surely, 2^{20011101122105} is an apocalyptic number.

It is an amenable number.

20011101122105 is a deficient number, since it is larger than the sum of its proper divisors (4306411708615).

20011101122105 is a wasteful number, since it uses less digits than its factorization.

20011101122105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469648.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 20011101122105 its reverse (50122110111002), we get a palindrome (70133211233107).

The spelling of 20011101122105 in words is "twenty trillion, eleven billion, one hundred one million, one hundred twenty-two thousand, one hundred five".