1213119 has 12 divisors (see below), whose sum is σ = 1800136. Its totient is φ = 786672.

The previous prime is 1213109. The next prime is 1213129. The reversal of 1213119 is 9113121.

Added to its reverse (9113121) it gives a triangular number (10326240 = T₄₅₄₄).

It is an interprime number because it is at equal distance from previous prime (1213109) and next prime (1213129).

It is not a de Polignac number, because 1213119 - 2⁵ = 1213087 is a prime.

It is a super-2 number, since 2×1213119² = 2943315416322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213109) 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 in 11 ways as a sum of consecutive naturals, for example, 1489 + ... + 2154.

2^1213119 is an apocalyptic number.

1213119 is a deficient number, since it is larger than the sum of its proper divisors (587017).

1213119 is a wasteful number, since it uses less digits than its factorization.

1213119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686 (or 3683 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

The square root of 1213119 is about 1101.4168148344. The cubic root of 1213119 is about 106.6517047156.

Adding to 1213119 its reverse (9113121), we get a triangular number (10326240 = T₄₅₄₄).

It can be divided in two parts, 121 and 3119, that added together give a triangular number (3240 = T₈₀).

The spelling of 1213119 in words is "one million, two hundred thirteen thousand, one hundred nineteen".