12056121 has 40 divisors (see below), whose sum is σ = 22465344. Its totient is φ = 6259680.

The previous prime is 12056113. The next prime is 12056123. The reversal of 12056121 is 12165021.

It is not a de Polignac number, because 12056121 - 2³ = 12056113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12056094 and 12056103.

It is not an unprimeable number, because it can be changed into a prime (12056123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5271 + ... + 7203.

Almost surely, 2^12056121 is an apocalyptic number.

12056121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12056121 is a deficient number, since it is larger than the sum of its proper divisors (10409223).

12056121 is a wasteful number, since it uses less digits than its factorization.

12056121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963 (or 1954 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 12056121 is about 3472.1925349842. The cubic root of 12056121 is about 229.2991963923.

Subtracting 12056121 from its reverse (12165021), we obtain a square (108900 = 330²).

The spelling of 12056121 in words is "twelve million, fifty-six thousand, one hundred twenty-one".