1212135 has 8 divisors (see below), whose sum is σ = 1939440. Its totient is φ = 646464.

The previous prime is 1212121. The next prime is 1212149. The reversal of 1212135 is 5312121.

It is an interprime number because it is at equal distance from previous prime (1212121) and next prime (1212149).

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

It is not a de Polignac number, because 1212135 - 2⁴ = 1212119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 80809 = 1212135 / (1 + 2 + 1 + 2 + 1 + 3 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40390 + ... + 40419.

It is an arithmetic number, because the mean of its divisors is an integer number (242430).

2^1212135 is an apocalyptic number.

1212135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1212135 is a deficient number, since it is larger than the sum of its proper divisors (727305).

1212135 is an equidigital number, since it uses as much as digits as its factorization.

1212135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80817.

The product of its digits is 60, while the sum is 15.

The square root of 1212135 is about 1100.9700268400. The cubic root of 1212135 is about 106.6228607014.

Adding to 1212135 its reverse (5312121), we get a palindrome (6524256).

The spelling of 1212135 in words is "one million, two hundred twelve thousand, one hundred thirty-five".