102219995 has 4 divisors (see below), whose sum is σ = 122664000. Its totient is φ = 81775992.

The previous prime is 102219977. The next prime is 102220007. The reversal of 102219995 is 599912201.

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 102219995 - 2¹⁸ = 101957851 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10221995 + ... + 10222004.

It is an arithmetic number, because the mean of its divisors is an integer number (30666000).

Almost surely, 2^102219995 is an apocalyptic number.

102219995 is a deficient number, since it is larger than the sum of its proper divisors (20444005).

102219995 is an equidigital number, since it uses as much as digits as its factorization.

102219995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20444004.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 102219995 is about 10110.3904474555. The cubic root of 102219995 is about 467.5685430494.

The spelling of 102219995 in words is "one hundred two million, two hundred nineteen thousand, nine hundred ninety-five".