20112222101121 has 12 divisors (see below), whose sum is σ = 29081991747172. Its totient is φ = 13393838405376.

The previous prime is 20112222101119. The next prime is 20112222101141. The reversal of 20112222101121 is 12110122221102.

20112222101121 is a `hidden beast` number, since 201 + 1 + 222 + 210 + 11 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1089234544896 + 19022987556225 = 1043664^2 + 4361535^2 .

It is not a de Polignac number, because 20112222101121 - 2¹ = 20112222101119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112222101094 and 20112222101103.

It is not an unprimeable number, because it can be changed into a prime (20112222101141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1192462936 + ... + 1192479801.

Almost surely, 2^{20112222101121} is an apocalyptic number.

It is an amenable number.

20112222101121 is a deficient number, since it is larger than the sum of its proper divisors (8969769646051).

20112222101121 is a wasteful number, since it uses less digits than its factorization.

20112222101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384943680 (or 2384943677 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20112222101121 its reverse (12110122221102), we get a palindrome (32222344322223).

The spelling of 20112222101121 in words is "twenty trillion, one hundred twelve billion, two hundred twenty-two million, one hundred one thousand, one hundred twenty-one".