9961212 has 24 divisors (see below), whose sum is σ = 23296896. Its totient is φ = 3312688.

The previous prime is 9961207. The next prime is 9961213. The reversal of 9961212 is 2121699.

It is a happy number.

9961212 is a modest number, since divided by 1212 gives 996 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 9961212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9961213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7123 + ... + 8405.

It is an arithmetic number, because the mean of its divisors is an integer number (970704).

Almost surely, 2^9961212 is an apocalyptic number.

It is an amenable number.

9961212 is an abundant number, since it is smaller than the sum of its proper divisors (13335684).

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

9961212 is a wasteful number, since it uses less digits than its factorization.

9961212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937 (or 1935 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 9961212 is about 3156.1387802186. The cubic root of 9961212 is about 215.1645540308.

The spelling of 9961212 in words is "nine million, nine hundred sixty-one thousand, two hundred twelve".