1212131 has 8 divisors (see below), whose sum is σ = 1273728. Its totient is φ = 1152000.

The previous prime is 1212121. The next prime is 1212149. The reversal of 1212131 is 1312121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212131 - 2¹⁸ = 949987 is a prime.

It is a super-2 number, since 2×1212131² = 2938523122322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1571 + ... + 2211.

It is an arithmetic number, because the mean of its divisors is an integer number (159216).

2^1212131 is an apocalyptic number.

1212131 is a deficient number, since it is larger than the sum of its proper divisors (61597).

1212131 is an equidigital number, since it uses as much as digits as its factorization.

1212131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733.

The product of its digits is 12, while the sum is 11.

The square root of 1212131 is about 1100.9682102586. The cubic root of 1212131 is about 106.6227434175.

Adding to 1212131 its reverse (1312121), we get a palindrome (2524252).

The spelling of 1212131 in words is "one million, two hundred twelve thousand, one hundred thirty-one".