20011000022121 has 8 divisors (see below), whose sum is σ = 26688349242720. Its totient is φ = 13337158741472.

The previous prime is 20011000022093. The next prime is 20011000022149. The reversal of 20011000022121 is 12122000011002.

It is an interprime number because it is at equal distance from previous prime (20011000022093) and next prime (20011000022149).

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

It is a cyclic number.

It is not a de Polignac number, because 20011000022121 - 2⁹ = 20011000021609 is a prime.

It is a super-3 number, since 3×20011000022121³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20011000022097 and 20011000022106.

It is not an unprimeable number, because it can be changed into a prime (20011000022161) 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, 876971676 + ... + 876994493.

It is an arithmetic number, because the mean of its divisors is an integer number (3336043655340).

Almost surely, 2^{20011000022121} is an apocalyptic number.

It is an amenable number.

20011000022121 is a deficient number, since it is larger than the sum of its proper divisors (6677349220599).

20011000022121 is a wasteful number, since it uses less digits than its factorization.

20011000022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753969975.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20011000022121 its reverse (12122000011002), we get a palindrome (32133000033123).

The spelling of 20011000022121 in words is "twenty trillion, eleven billion, twenty-two thousand, one hundred twenty-one".