20111066311 has 8 divisors (see below), whose sum is σ = 23065871904. Its totient is φ = 17176709760.

The previous prime is 20111066303. The next prime is 20111066359. The reversal of 20111066311 is 11366011102.

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

It is not a de Polignac number, because 20111066311 - 2³ = 20111066303 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 (20111046311) 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, 5110150 + ... + 5114083.

It is an arithmetic number, because the mean of its divisors is an integer number (2883233988).

Almost surely, 2^20111066311 is an apocalyptic number.

20111066311 is a deficient number, since it is larger than the sum of its proper divisors (2954805593).

20111066311 is a wasteful number, since it uses less digits than its factorization.

20111066311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10224521.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 20111066311 its reverse (11366011102), we get a palindrome (31477077413).

The spelling of 20111066311 in words is "twenty billion, one hundred eleven million, sixty-six thousand, three hundred eleven".