1212055 has 16 divisors (see below), whose sum is σ = 1622880. Its totient is φ = 862848.

The previous prime is 1212053. The next prime is 1212061. The reversal of 1212055 is 5502121.

It is a cyclic number.

It is not a de Polignac number, because 1212055 - 2¹ = 1212053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212053) 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 15 ways as a sum of consecutive naturals, for example, 1564 + ... + 2206.

It is an arithmetic number, because the mean of its divisors is an integer number (101430).

2^1212055 is an apocalyptic number.

1212055 is a deficient number, since it is larger than the sum of its proper divisors (410825).

1212055 is a wasteful number, since it uses less digits than its factorization.

1212055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1212055 is about 1100.9336946429. The cubic root of 1212055 is about 106.6205149736.

Adding to 1212055 its reverse (5502121), we get a palindrome (6714176).

The spelling of 1212055 in words is "one million, two hundred twelve thousand, fifty-five".