20112220002121 has 32 divisors (see below), whose sum is σ = 22377557164032. Its totient is φ = 17950545103680.

The previous prime is 20112220002113. The next prime is 20112220002143. The reversal of 20112220002121 is 12120002221102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20112220002121 - 2³ = 20112220002113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112220002095 and 20112220002104.

It is not an unprimeable number, because it can be changed into a prime (20112220002421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4068826176 + ... + 4068831118.

It is an arithmetic number, because the mean of its divisors is an integer number (699298661376).

Almost surely, 2^{20112220002121} is an apocalyptic number.

It is an amenable number.

20112220002121 is a deficient number, since it is larger than the sum of its proper divisors (2265337161911).

20112220002121 is a wasteful number, since it uses less digits than its factorization.

20112220002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11773.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20112220002121 its reverse (12120002221102), we get a palindrome (32232222223223).

The spelling of 20112220002121 in words is "twenty trillion, one hundred twelve billion, two hundred twenty million, two thousand, one hundred twenty-one".