12160621 has 6 divisors (see below), whose sum is σ = 13366766. Its totient is φ = 11055000.

The previous prime is 12160607. The next prime is 12160669. The reversal of 12160621 is 12606121.

It can be written as a sum of positive squares in only one way, i.e., 8497225 + 3663396 = 2915^2 + 1914^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12160621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12160021) 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, 50130 + ... + 50371.

Almost surely, 2^12160621 is an apocalyptic number.

12160621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12160621 is a deficient number, since it is larger than the sum of its proper divisors (1206145).

12160621 is a wasteful number, since it uses less digits than its factorization.

12160621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100523 (or 100512 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 12160621 is about 3487.2081956775. The cubic root of 12160621 is about 229.9597976362.

Adding to 12160621 its reverse (12606121), we get a palindrome (24766742).

The spelling of 12160621 in words is "twelve million, one hundred sixty thousand, six hundred twenty-one".