212400102 has 16 divisors (see below), whose sum is σ = 429574320. Its totient is φ = 70004352.

The previous prime is 212400079. The next prime is 212400103. The reversal of 212400102 is 201004212.

It is a super-2 number, since 2×212400102² = 90227606659220808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212400103) 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 7 ways as a sum of consecutive naturals, for example, 198343 + ... + 199410.

It is an arithmetic number, because the mean of its divisors is an integer number (26848395).

Almost surely, 2^212400102 is an apocalyptic number.

212400102 is an abundant number, since it is smaller than the sum of its proper divisors (217174218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212400102 is a wasteful number, since it uses less digits than its factorization.

212400102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397847.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 212400102 is about 14573.9528611835. The cubic root of 212400102 is about 596.6480702602.

Adding to 212400102 its reverse (201004212), we get a palindrome (413404314).

The spelling of 212400102 in words is "two hundred twelve million, four hundred thousand, one hundred two".