11221969 has 8 divisors (see below), whose sum is σ = 12637440. Its totient is φ = 9872400.

The previous prime is 11221967. The next prime is 11221993. The reversal of 11221969 is 96912211.

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 11221969 - 2¹ = 11221967 is a prime.

It is a super-2 number, since 2×11221969² = 251865176473922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11221969.

It is not an unprimeable number, because it can be changed into a prime (11221961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16114 + ... + 16795.

It is an arithmetic number, because the mean of its divisors is an integer number (1579680).

Almost surely, 2^11221969 is an apocalyptic number.

It is an amenable number.

11221969 is a deficient number, since it is larger than the sum of its proper divisors (1415471).

11221969 is a wasteful number, since it uses less digits than its factorization.

11221969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32951.

The product of its digits is 1944, while the sum is 31.

The square root of 11221969 is about 3349.9207453311. The cubic root of 11221969 is about 223.8839814269.

The spelling of 11221969 in words is "eleven million, two hundred twenty-one thousand, nine hundred sixty-nine".