122444621 has 4 divisors (see below), whose sum is σ = 131863452. Its totient is φ = 113025792.

The previous prime is 122444603. The next prime is 122444627. The reversal of 122444621 is 126444221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69722500 + 52722121 = 8350^2 + 7261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122444621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122444627) 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, 4709396 + ... + 4709421.

It is an arithmetic number, because the mean of its divisors is an integer number (32965863).

Almost surely, 2^122444621 is an apocalyptic number.

It is an amenable number.

122444621 is a deficient number, since it is larger than the sum of its proper divisors (9418831).

122444621 is an equidigital number, since it uses as much as digits as its factorization.

122444621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9418830.

The product of its digits is 3072, while the sum is 26.

The square root of 122444621 is about 11065.4697595719. The cubic root of 122444621 is about 496.5693430211.

Adding to 122444621 its reverse (126444221), we get a palindrome (248888842).

The spelling of 122444621 in words is "one hundred twenty-two million, four hundred forty-four thousand, six hundred twenty-one".