20122101010111 has 4 divisors (see below), whose sum is σ = 20122109982072. Its totient is φ = 20122092038152.

The previous prime is 20122101010093. The next prime is 20122101010153. The reversal of 20122101010111 is 11101010122102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20122101010111 - 2⁵ = 20122101010079 is a prime.

It is a super-2 number, since 2×20122101010111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122101010091 and 20122101010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122101014111) 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, 2177340 + ... + 6707086.

It is an arithmetic number, because the mean of its divisors is an integer number (5030527495518).

Almost surely, 2^{20122101010111} is an apocalyptic number.

20122101010111 is a deficient number, since it is larger than the sum of its proper divisors (8971961).

20122101010111 is an equidigital number, since it uses as much as digits as its factorization.

20122101010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8971960.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20122101010111 its reverse (11101010122102), we get a palindrome (31223111132213).

The spelling of 20122101010111 in words is "twenty trillion, one hundred twenty-two billion, one hundred one million, ten thousand, one hundred eleven".