207021113 has 8 divisors (see below), whose sum is σ = 224267400. Its totient is φ = 191094384.

The previous prime is 207021097. The next prime is 207021119. The reversal of 207021113 is 311120702.

207021113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 27541504 + 179479609 = 5248^2 + 13397^2 .

It is not a de Polignac number, because 207021113 - 2⁴ = 207021097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 207021091 and 207021100.

It is not an unprimeable number, because it can be changed into a prime (207021119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44918 + ... + 49311.

It is an arithmetic number, because the mean of its divisors is an integer number (28033425).

Almost surely, 2^207021113 is an apocalyptic number.

It is an amenable number.

207021113 is a deficient number, since it is larger than the sum of its proper divisors (17246287).

207021113 is an frugal number, since it uses more digits than its factorization.

207021113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94268 (or 94242 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 207021113 is about 14388.2282787006. The cubic root of 207021113 is about 591.5682809716.

Adding to 207021113 its reverse (311120702), we get a palindrome (518141815).

The spelling of 207021113 in words is "two hundred seven million, twenty-one thousand, one hundred thirteen".