2101111007 has 2 divisors, whose sum is σ = 2101111008. Its totient is φ = 2101111006.

The previous prime is 2101111003. The next prime is 2101111027. The reversal of 2101111007 is 7001111012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101111007 - 2² = 2101111003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101110982 and 2101111000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101111003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050555503 + 1050555504.

It is an arithmetic number, because the mean of its divisors is an integer number (1050555504).

Almost surely, 2^2101111007 is an apocalyptic number.

2101111007 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101111007 is an equidigital number, since it uses as much as digits as its factorization.

2101111007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14, while the sum is 14.

The square root of 2101111007 is about 45837.8774268617. The cubic root of 2101111007 is about 1280.8049557162.

Adding to 2101111007 its reverse (7001111012), we get a palindrome (9102222019).

The spelling of 2101111007 in words is "two billion, one hundred one million, one hundred eleven thousand, seven".