102215411 has 4 divisors (see below), whose sum is σ = 102237024. Its totient is φ = 102193800.

The previous prime is 102215389. The next prime is 102215417. The reversal of 102215411 is 114512201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102215411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102215411.

It is not an unprimeable number, because it can be changed into a prime (102215417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320 + ... + 14301.

It is an arithmetic number, because the mean of its divisors is an integer number (25559256).

Almost surely, 2^102215411 is an apocalyptic number.

102215411 is a deficient number, since it is larger than the sum of its proper divisors (21613).

102215411 is an equidigital number, since it uses as much as digits as its factorization.

102215411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21612.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 102215411 is about 10110.1637474375. The cubic root of 102215411 is about 467.5615536594.

Adding to 102215411 its reverse (114512201), we get a palindrome (216727612).

The spelling of 102215411 in words is "one hundred two million, two hundred fifteen thousand, four hundred eleven".