20111131214122 has 8 divisors (see below), whose sum is σ = 32487211961316. Its totient is φ = 9282060560352.

The previous prime is 20111131214071. The next prime is 20111131214197. The reversal of 20111131214122 is 22141213111102.

It can be written as a sum of positive squares in 2 ways, for example, as 16956845101161 + 3154286112961 = 4117869^2 + 1776031^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20111131214093 and 20111131214102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386752523323 + ... + 386752523374.

Almost surely, 2^{20111131214122} is an apocalyptic number.

20111131214122 is a deficient number, since it is larger than the sum of its proper divisors (12376080747194).

20111131214122 is a wasteful number, since it uses less digits than its factorization.

20111131214122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773505046712.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 20111131214122 its reverse (22141213111102), we get a palindrome (42252344325224).

The spelling of 20111131214122 in words is "twenty trillion, one hundred eleven billion, one hundred thirty-one million, two hundred fourteen thousand, one hundred twenty-two".