2101122007 has 4 divisors (see below), whose sum is σ = 2173574520. Its totient is φ = 2028669496.

The previous prime is 2101121959. The next prime is 2101122017. The reversal of 2101122007 is 7002211012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101122007 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 (2101122017) 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, 36226213 + ... + 36226270.

It is an arithmetic number, because the mean of its divisors is an integer number (543393630).

Almost surely, 2^2101122007 is an apocalyptic number.

2101122007 is a deficient number, since it is larger than the sum of its proper divisors (72452513).

2101122007 is an equidigital number, since it uses as much as digits as its factorization.

2101122007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72452512.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 2101122007 is about 45837.9974148086. The cubic root of 2101122007 is about 1280.8071908559.

Adding to 2101122007 its reverse (7002211012), we get a palindrome (9103333019).

The spelling of 2101122007 in words is "two billion, one hundred one million, one hundred twenty-two thousand, seven".