12055522 has 4 divisors (see below), whose sum is σ = 18083286. Its totient is φ = 6027760.

The previous prime is 12055513. The next prime is 12055531. The reversal of 12055522 is 22555021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22555021 = 151 ⋅149371.

It is an interprime number because it is at equal distance from previous prime (12055513) and next prime (12055531).

It can be written as a sum of positive squares in only one way, i.e., 11282881 + 772641 = 3359^2 + 879^2 .

It is a super-2 number, since 2×12055522² = 290671221384968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12055493 and 12055502.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3013879 + ... + 3013882.

Almost surely, 2^12055522 is an apocalyptic number.

12055522 is a deficient number, since it is larger than the sum of its proper divisors (6027764).

12055522 is an equidigital number, since it uses as much as digits as its factorization.

12055522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6027763.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 12055522 is about 3472.1062771753. The cubic root of 12055522 is about 229.2953988056.

The spelling of 12055522 in words is "twelve million, fifty-five thousand, five hundred twenty-two".