102200221 has 4 divisors (see below), whose sum is σ = 107579200. Its totient is φ = 96821244.

The previous prime is 102200191. The next prime is 102200227. The reversal of 102200221 is 122002201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122002201 = 359 ⋅339839.

It is a cyclic number.

It is not a de Polignac number, because 102200221 - 2⁷ = 102200093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102200198 and 102200207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102200227) 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, 2689461 + ... + 2689498.

It is an arithmetic number, because the mean of its divisors is an integer number (26894800).

Almost surely, 2^102200221 is an apocalyptic number.

It is an amenable number.

102200221 is a deficient number, since it is larger than the sum of its proper divisors (5378979).

102200221 is an equidigital number, since it uses as much as digits as its factorization.

102200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5378978.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 102200221 is about 10109.4124952937. The cubic root of 102200221 is about 467.5383914252.

Adding to 102200221 its reverse (122002201), we get a palindrome (224202422).

The spelling of 102200221 in words is "one hundred two million, two hundred thousand, two hundred twenty-one".