1369221 has 16 divisors (see below), whose sum is σ = 2108544. Its totient is φ = 774144.

The previous prime is 1369219. The next prime is 1369223. The reversal of 1369221 is 1229631.

It is an interprime number because it is at equal distance from previous prime (1369219) and next prime (1369223).

It is not a de Polignac number, because 1369221 - 2¹ = 1369219 is a prime.

It is a super-2 number, since 2×1369221² = 3749532293682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1369191 and 1369200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2085 + ... + 2661.

It is an arithmetic number, because the mean of its divisors is an integer number (131784).

2^1369221 is an apocalyptic number.

It is an amenable number.

1369221 is a deficient number, since it is larger than the sum of its proper divisors (739323).

1369221 is a wasteful number, since it uses less digits than its factorization.

1369221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its digits is 648, while the sum is 24.

The square root of 1369221 is about 1170.1371714462. The cubic root of 1369221 is about 111.0429993297.

The spelling of 1369221 in words is "one million, three hundred sixty-nine thousand, two hundred twenty-one".