121600212 has 12 divisors (see below), whose sum is σ = 283733856. Its totient is φ = 40533400.

The previous prime is 121600183. The next prime is 121600217. The reversal of 121600212 is 212006121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×121600212² = 29573223116889888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121600191 and 121600200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121600217) 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 3 ways as a sum of consecutive naturals, for example, 5066664 + ... + 5066687.

It is an arithmetic number, because the mean of its divisors is an integer number (23644488).

Almost surely, 2^121600212 is an apocalyptic number.

121600212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121600212 is an abundant number, since it is smaller than the sum of its proper divisors (162133644).

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

121600212 is a wasteful number, since it uses less digits than its factorization.

121600212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133358 (or 10133356 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 121600212 is about 11027.2486142283. The cubic root of 121600212 is about 495.4252197633.

Adding to 121600212 its reverse (212006121), we get a palindrome (333606333).

The spelling of 121600212 in words is "one hundred twenty-one million, six hundred thousand, two hundred twelve".