5111001111 has 4 divisors (see below), whose sum is σ = 6814668152. Its totient is φ = 3407334072.

The previous prime is 5111001109. The next prime is 5111001127. The reversal of 5111001111 is 1111001115.

It is a happy number.

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

It is not a de Polignac number, because 5111001111 - 2¹ = 5111001109 is a prime.

It is a super-2 number, since 2×5111001111² = 52244664713286468642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5111051111) 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, 851833516 + ... + 851833521.

It is an arithmetic number, because the mean of its divisors is an integer number (1703667038).

Almost surely, 2^5111001111 is an apocalyptic number.

5111001111 is a deficient number, since it is larger than the sum of its proper divisors (1703667041).

5111001111 is a wasteful number, since it uses less digits than its factorization.

5111001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703667040.

The product of its (nonzero) digits is 5, while the sum is 12.

The square root of 5111001111 is about 71491.2659770409. The cubic root of 5111001111 is about 1722.5373932646.

Adding to 5111001111 its reverse (1111001115), we get a palindrome (6222002226).

The spelling of 5111001111 in words is "five billion, one hundred eleven million, one thousand, one hundred eleven".