11220069 has 24 divisors (see below), whose sum is σ = 17568768. Its totient is φ = 6350400.

The previous prime is 11220037. The next prime is 11220073. The reversal of 11220069 is 96002211.

11220069 = 781² + 782² + ... + 798².

11220069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11220069 - 2⁵ = 11220037 is a prime.

It is a super-2 number, since 2×11220069² = 251779896729522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18369 + ... + 18969.

It is an arithmetic number, because the mean of its divisors is an integer number (732032).

Almost surely, 2^11220069 is an apocalyptic number.

It is an amenable number.

11220069 is a deficient number, since it is larger than the sum of its proper divisors (6348699).

11220069 is a wasteful number, since it uses less digits than its factorization.

11220069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 11220069 is about 3349.6371445277. The cubic root of 11220069 is about 223.8713453921.

The spelling of 11220069 in words is "eleven million, two hundred twenty thousand, sixty-nine".