122221969 has 4 divisors (see below), whose sum is σ = 122252580. Its totient is φ = 122191360.

The previous prime is 122221951. The next prime is 122221987. The reversal of 122221969 is 969122221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 969122221 = 157 ⋅6172753.

It is an interprime number because it is at equal distance from previous prime (122221951) and next prime (122221987).

It can be written as a sum of positive squares in 2 ways, for example, as 96334225 + 25887744 = 9815^2 + 5088^2 .

It is a cyclic number.

It is not a de Polignac number, because 122221969 - 2⁵ = 122221937 is a prime.

It is a super-2 number, since 2×122221969² = 29876419412473922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122221999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8224 + ... + 17665.

It is an arithmetic number, because the mean of its divisors is an integer number (30563145).

Almost surely, 2^122221969 is an apocalyptic number.

It is an amenable number.

122221969 is a deficient number, since it is larger than the sum of its proper divisors (30611).

122221969 is an equidigital number, since it uses as much as digits as its factorization.

122221969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30610.

The product of its digits is 7776, while the sum is 34.

The square root of 122221969 is about 11055.4045154395. The cubic root of 122221969 is about 496.2681749250.

The spelling of 122221969 in words is "one hundred twenty-two million, two hundred twenty-one thousand, nine hundred sixty-nine".