102419221 has 4 divisors (see below), whose sum is σ = 104155200. Its totient is φ = 100683244.

The previous prime is 102419209. The next prime is 102419227. The reversal of 102419221 is 122914201.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102419221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102419192 and 102419201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102419227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867901 + ... + 868018.

It is an arithmetic number, because the mean of its divisors is an integer number (26038800).

Almost surely, 2^102419221 is an apocalyptic number.

It is an amenable number.

102419221 is a deficient number, since it is larger than the sum of its proper divisors (1735979).

102419221 is an equidigital number, since it uses as much as digits as its factorization.

102419221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735978.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 102419221 is about 10120.2381888965. The cubic root of 102419221 is about 467.8721084416.

The spelling of 102419221 in words is "one hundred two million, four hundred nineteen thousand, two hundred twenty-one".