20011110022121 has 8 divisors (see below), whose sum is σ = 20442061588224. Its totient is φ = 19580374425600.

The previous prime is 20011110022103. The next prime is 20011110022147. The reversal of 20011110022121 is 12122001111002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011110022121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011110022096 and 20011110022105.

It is not an unprimeable number, because it can be changed into a prime (20011110022921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53805080 + ... + 54175721.

It is an arithmetic number, because the mean of its divisors is an integer number (2555257698528).

Almost surely, 2^{20011110022121} is an apocalyptic number.

It is an amenable number.

20011110022121 is a deficient number, since it is larger than the sum of its proper divisors (430951566103).

20011110022121 is a wasteful number, since it uses less digits than its factorization.

20011110022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107984791.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20011110022121 its reverse (12122001111002), we get a palindrome (32133111133123).

The spelling of 20011110022121 in words is "twenty trillion, eleven billion, one hundred ten million, twenty-two thousand, one hundred twenty-one".