2111011101 has 6 divisors (see below), whose sum is σ = 3049238270. Its totient is φ = 1407340728.

The previous prime is 2111011099. The next prime is 2111011129. The reversal of 2111011101 is 1011101112.

It can be written as a sum of positive squares in only one way, i.e., 2049372900 + 61638201 = 45270^2 + 7851^2 .

It is not a de Polignac number, because 2111011101 - 2¹ = 2111011099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 234556789 = 2111011101 / (2 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111011141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117278386 + ... + 117278403.

Almost surely, 2^2111011101 is an apocalyptic number.

It is an amenable number.

2111011101 is a deficient number, since it is larger than the sum of its proper divisors (938227169).

2111011101 is a wasteful number, since it uses less digits than its factorization.

2111011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234556795 (or 234556792 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

The square root of 2111011101 is about 45945.7408363387. The cubic root of 2111011101 is about 1282.8134527886.

Adding to 2111011101 its reverse (1011101112), we get a palindrome (3122112213).

It can be divided in two parts, 2111011 and 101, that added together give a palindrome (2111112).

The spelling of 2111011101 in words is "two billion, one hundred eleven million, eleven thousand, one hundred one".