102213197 has 8 divisors (see below), whose sum is σ = 111958200. Its totient is φ = 92882944.

The previous prime is 102213191. The next prime is 102213227. The reversal of 102213197 is 791312201.

It can be written as a sum of positive squares in 4 ways, for example, as 55071241 + 47141956 = 7421^2 + 6866^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102213197 - 2⁸ = 102212941 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 (102213191) 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, 103172 + ... + 104157.

It is an arithmetic number, because the mean of its divisors is an integer number (13994775).

Almost surely, 2^102213197 is an apocalyptic number.

102213197 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

102213197 is a deficient number, since it is larger than the sum of its proper divisors (9745003).

102213197 is a wasteful number, since it uses less digits than its factorization.

102213197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207375.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 102213197 is about 10110.0542530691. The cubic root of 102213197 is about 467.5581778189.

Adding to 102213197 its reverse (791312201), we get a palindrome (893525398).

The spelling of 102213197 in words is "one hundred two million, two hundred thirteen thousand, one hundred ninety-seven".