20112021112011 has 8 divisors (see below), whose sum is σ = 27681061315584. Its totient is φ = 12975497491560.

The previous prime is 20112021111971. The next prime is 20112021112037. The reversal of 20112021112011 is 11021112021102.

It is a happy number.

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

It is not a de Polignac number, because 20112021112011 - 2¹⁴ = 20112021095627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20112021112081) 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, 108129145671 + ... + 108129145856.

It is an arithmetic number, because the mean of its divisors is an integer number (3460132664448).

Almost surely, 2^{20112021112011} is an apocalyptic number.

20112021112011 is a deficient number, since it is larger than the sum of its proper divisors (7569040203573).

20112021112011 is a wasteful number, since it uses less digits than its factorization.

20112021112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216258291561.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20112021112011 its reverse (11021112021102), we get a palindrome (31133133133113).

Subtracting from 20112021112011 its reverse (11021112021102), we obtain a palindrome (9090909090909).

It can be divided in two parts, 2011202 and 1112011, that added together give a palindrome (3123213).

The spelling of 20112021112011 in words is "twenty trillion, one hundred twelve billion, twenty-one million, one hundred twelve thousand, eleven".