12271954 has 4 divisors (see below), whose sum is σ = 18407934. Its totient is φ = 6135976.

The previous prime is 12271951. The next prime is 12271969. The reversal of 12271954 is 45917221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11716929 + 555025 = 3423^2 + 745^2 .

It is not an unprimeable number, because it can be changed into a prime (12271951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3067987 + ... + 3067990.

Almost surely, 2^12271954 is an apocalyptic number.

12271954 is a deficient number, since it is larger than the sum of its proper divisors (6135980).

12271954 is an equidigital number, since it uses as much as digits as its factorization.

12271954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6135979.

The product of its digits is 5040, while the sum is 31.

The square root of 12271954 is about 3503.1348817880. The cubic root of 12271954 is about 230.6594433272.

It can be divided in two parts, 12271 and 954, that added together give a square (13225 = 115²).

The spelling of 12271954 in words is "twelve million, two hundred seventy-one thousand, nine hundred fifty-four".