102413221 has 4 divisors (see below), whose sum is σ = 102458412. Its totient is φ = 102368032.

The previous prime is 102413189. The next prime is 102413257. The reversal of 102413221 is 122314201.

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 49196196 + 53217025 = 7014^2 + 7295^2 .

It is a cyclic number.

It is not a de Polignac number, because 102413221 - 2⁵ = 102413189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102413195 and 102413204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102413921) 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, 19006 + ... + 23791.

It is an arithmetic number, because the mean of its divisors is an integer number (25614603).

Almost surely, 2^102413221 is an apocalyptic number.

It is an amenable number.

102413221 is a deficient number, since it is larger than the sum of its proper divisors (45191).

102413221 is an equidigital number, since it uses as much as digits as its factorization.

102413221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45190.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 102413221 is about 10119.9417488442. The cubic root of 102413221 is about 467.8629718510.

Adding to 102413221 its reverse (122314201), we get a palindrome (224727422).

The spelling of 102413221 in words is "one hundred two million, four hundred thirteen thousand, two hundred twenty-one".