102219907 has 4 divisors (see below), whose sum is σ = 103659696. Its totient is φ = 100780120.

The previous prime is 102219899. The next prime is 102219911. The reversal of 102219907 is 709912201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102219907 - 2³ = 102219899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102219977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719788 + ... + 719929.

It is an arithmetic number, because the mean of its divisors is an integer number (25914924).

Almost surely, 2^102219907 is an apocalyptic number.

102219907 is a deficient number, since it is larger than the sum of its proper divisors (1439789).

102219907 is an equidigital number, since it uses as much as digits as its factorization.

102219907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439788.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 102219907 is about 10110.3860954961. The cubic root of 102219907 is about 467.5684088746.

The spelling of 102219907 in words is "one hundred two million, two hundred nineteen thousand, nine hundred seven".