102212187 has 24 divisors (see below), whose sum is σ = 172948032. Its totient is φ = 53096400.

The previous prime is 102212141. The next prime is 102212213. The reversal of 102212187 is 781212201.

It is not a de Polignac number, because 102212187 - 2⁷ = 102212059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102212107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29989 + ... + 33222.

It is an arithmetic number, because the mean of its divisors is an integer number (7206168).

Almost surely, 2^102212187 is an apocalyptic number.

102212187 is a deficient number, since it is larger than the sum of its proper divisors (70735845).

102212187 is a wasteful number, since it uses less digits than its factorization.

102212187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63239 (or 63232 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 102212187 is about 10110.0043026697. The cubic root of 102212187 is about 467.5566377852.

Adding to 102212187 its reverse (781212201), we get a palindrome (883424388).

The spelling of 102212187 in words is "one hundred two million, two hundred twelve thousand, one hundred eighty-seven".