2189111701 has 6 divisors (see below), whose sum is σ = 2546517750. Its totient is φ = 1876381416.

The previous prime is 2189111677. The next prime is 2189111711. The reversal of 2189111701 is 1071119812.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1317327025 + 871784676 = 36295^2 + 29526^2 .

It is not a de Polignac number, because 2189111701 - 2⁹ = 2189111189 is a prime.

It is a super-2 number, since 2×2189111701² = 9584420078910226802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189111711) 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, 22337826 + ... + 22337923.

It is an arithmetic number, because the mean of its divisors is an integer number (424419625).

Almost surely, 2^2189111701 is an apocalyptic number.

It is an amenable number.

2189111701 is a deficient number, since it is larger than the sum of its proper divisors (357406049).

2189111701 is an equidigital number, since it uses as much as digits as its factorization.

2189111701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44675763 (or 44675756 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 31.

The square root of 2189111701 is about 46787.9439706427. The cubic root of 2189111701 is about 1298.4422566428.

It can be divided in two parts, 2189111 and 701, that added together give a palindrome (2189812).

The spelling of 2189111701 in words is "two billion, one hundred eighty-nine million, one hundred eleven thousand, seven hundred one".