101520212 has 12 divisors (see below), whose sum is σ = 177927540. Its totient is φ = 50683776.

The previous prime is 101520203. The next prime is 101520227. The reversal of 101520212 is 212025101.

It can be written as a sum of positive squares in 2 ways, for example, as 98684356 + 2835856 = 9934^2 + 1684^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16037 + ... + 21452.

It is an arithmetic number, because the mean of its divisors is an integer number (14827295).

Almost surely, 2^101520212 is an apocalyptic number.

It is an amenable number.

101520212 is a deficient number, since it is larger than the sum of its proper divisors (76407328).

101520212 is a wasteful number, since it uses less digits than its factorization.

101520212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38170 (or 38168 counting only the distinct ones).

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

The square root of 101520212 is about 10075.7238945894. The cubic root of 101520212 is about 466.4991305637.

Adding to 101520212 its reverse (212025101), we get a palindrome (313545313).

The spelling of 101520212 in words is "one hundred one million, five hundred twenty thousand, two hundred twelve".