212405102 has 24 divisors (see below), whose sum is σ = 399137256. Its totient is φ = 84027888.

The previous prime is 212405101. The next prime is 212405147. The reversal of 212405102 is 201504212.

212405102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212405101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82088 + ... + 84635.

It is an arithmetic number, because the mean of its divisors is an integer number (16630719).

Almost surely, 2^212405102 is an apocalyptic number.

212405102 is a deficient number, since it is larger than the sum of its proper divisors (186732154).

212405102 is a wasteful number, since it uses less digits than its factorization.

212405102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166752 (or 166745 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 212405102 is about 14574.1243990848. The cubic root of 212405102 is about 596.6527520171.

Adding to 212405102 its reverse (201504212), we get a palindrome (413909314).

The spelling of 212405102 in words is "two hundred twelve million, four hundred five thousand, one hundred two".