20120002111 has 8 divisors (see below), whose sum is σ = 22027207248. Its totient is φ = 18225816000.

The previous prime is 20120002099. The next prime is 20120002157. The reversal of 20120002111 is 11120002102.

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 20120002111 - 2¹¹ = 20120000063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120002171) 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, 3251520 + ... + 3257701.

It is an arithmetic number, because the mean of its divisors is an integer number (2753400906).

Almost surely, 2^20120002111 is an apocalyptic number.

20120002111 is a deficient number, since it is larger than the sum of its proper divisors (1907205137).

20120002111 is a wasteful number, since it uses less digits than its factorization.

20120002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6509513.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20120002111 its reverse (11120002102), we get a palindrome (31240004213).

Subtracting from 20120002111 its reverse (11120002102), we obtain a palindrome (9000000009).

The spelling of 20120002111 in words is "twenty billion, one hundred twenty million, two thousand, one hundred eleven".