12221769 has 16 divisors (see below), whose sum is σ = 19604480. Its totient is φ = 6616080.

The previous prime is 12221749. The next prime is 12221771. The reversal of 12221769 is 96712221.

It is not a de Polignac number, because 12221769 - 2¹³ = 12213577 is a prime.

It is a super-2 number, since 2×12221769² = 298743274978722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12221749) 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, 14917 + ... + 15714.

It is an arithmetic number, because the mean of its divisors is an integer number (1225280).

Almost surely, 2^12221769 is an apocalyptic number.

12221769 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12221769 is a deficient number, since it is larger than the sum of its proper divisors (7382711).

12221769 is a wasteful number, since it uses less digits than its factorization.

12221769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30660.

The product of its digits is 3024, while the sum is 30.

The square root of 12221769 is about 3495.9646737346. The cubic root of 12221769 is about 230.3445937312.

The spelling of 12221769 in words is "twelve million, two hundred twenty-one thousand, seven hundred sixty-nine".