207072101 has 4 divisors (see below), whose sum is σ = 207202092. Its totient is φ = 206942112.

The previous prime is 207072097. The next prime is 207072109. The reversal of 207072101 is 101270702.

It is a Cunningham number, because it is equal to 14390²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 129367876 + 77704225 = 11374^2 + 8815^2 .

It is a cyclic number.

It is not a de Polignac number, because 207072101 - 2² = 207072097 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 (207072109) 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, 62576 + ... + 65801.

It is an arithmetic number, because the mean of its divisors is an integer number (51800523).

Almost surely, 2^207072101 is an apocalyptic number.

It is an amenable number.

207072101 is a deficient number, since it is larger than the sum of its proper divisors (129991).

207072101 is a wasteful number, since it uses less digits than its factorization.

207072101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129990.

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 207072101 is about 14390.0000347464. Note that the first 4 decimals coincide. The cubic root of 207072101 is about 591.6168435024.

The spelling of 207072101 in words is "two hundred seven million, seventy-two thousand, one hundred one".