102212005 has 8 divisors (see below), whose sum is σ = 140176512. Its totient is φ = 70088208.

The previous prime is 102211999. The next prime is 102212009. The reversal of 102212005 is 500212201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102212005 - 2³ = 102211997 is a prime.

It is a super-2 number, since 2×102212005² = 20894587932240050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212009) 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 7 ways as a sum of consecutive naturals, for example, 1460137 + ... + 1460206.

It is an arithmetic number, because the mean of its divisors is an integer number (17522064).

Almost surely, 2^102212005 is an apocalyptic number.

It is an amenable number.

102212005 is a deficient number, since it is larger than the sum of its proper divisors (37964507).

102212005 is an equidigital number, since it uses as much as digits as its factorization.

102212005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920355.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 102212005 is about 10109.9953016804. The cubic root of 102212005 is about 467.5563602731.

Adding to 102212005 its reverse (500212201), we get a palindrome (602424206).

The spelling of 102212005 in words is "one hundred two million, two hundred twelve thousand, five".