102105212 has 24 divisors (see below), whose sum is σ = 195670272. Its totient is φ = 46234800.

The previous prime is 102105203. The next prime is 102105251. The reversal of 102105212 is 212501201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7643 + ... + 16205.

It is an arithmetic number, because the mean of its divisors is an integer number (8152928).

Almost surely, 2^102105212 is an apocalyptic number.

It is an amenable number.

102105212 is a deficient number, since it is larger than the sum of its proper divisors (93565060).

102105212 is a wasteful number, since it uses less digits than its factorization.

102105212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8849 (or 8847 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 102105212 is about 10104.7123660201. The cubic root of 102105212 is about 467.3934663405.

Adding to 102105212 its reverse (212501201), we get a palindrome (314606413).

The spelling of 102105212 in words is "one hundred two million, one hundred five thousand, two hundred twelve".