9212013 has 6 divisors (see below), whose sum is σ = 13306254. Its totient is φ = 6141336.

The previous prime is 9212009. The next prime is 9212033. The reversal of 9212013 is 3102129.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9162729 + 49284 = 3027^2 + 222^2 .

It is not a de Polignac number, because 9212013 - 2² = 9212009 is a prime.

It is a super-2 number, since 2×9212013² = 169722367024338, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9212033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 511770 + ... + 511787.

It is an arithmetic number, because the mean of its divisors is an integer number (2217709).

Almost surely, 2^9212013 is an apocalyptic number.

It is an amenable number.

9212013 is a deficient number, since it is larger than the sum of its proper divisors (4094241).

9212013 is a wasteful number, since it uses less digits than its factorization.

9212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023563 (or 1023560 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 9212013 is about 3035.1298160046. The cubic root of 9212013 is about 209.6290731018.

The spelling of 9212013 in words is "nine million, two hundred twelve thousand, thirteen".