2111230311011 has 4 divisors (see below), whose sum is σ = 2179334514624. Its totient is φ = 2043126107400.

The previous prime is 2111230311007. The next prime is 2111230311031. The reversal of 2111230311011 is 1101130321112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2111230311011 - 2² = 2111230311007 is a prime.

It is a super-2 number, since 2×2111230311011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111230311031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34052101760 + ... + 34052101821.

It is an arithmetic number, because the mean of its divisors is an integer number (544833628656).

Almost surely, 2^{2111230311011} is an apocalyptic number.

2111230311011 is a deficient number, since it is larger than the sum of its proper divisors (68104203613).

2111230311011 is an equidigital number, since it uses as much as digits as its factorization.

2111230311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68104203612.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 2111230311011 its reverse (1101130321112), we get a palindrome (3212360632123).

The spelling of 2111230311011 in words is "two trillion, one hundred eleven billion, two hundred thirty million, three hundred eleven thousand, eleven".