121422444 has 72 divisors (see below), whose sum is σ = 334740672. Its totient is φ = 33958080.

The previous prime is 121422439. The next prime is 121422467. The reversal of 121422444 is 444224121.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19587 + ... + 25029.

It is an arithmetic number, because the mean of its divisors is an integer number (4649176).

Almost surely, 2^121422444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121422444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167370336).

121422444 is an abundant number, since it is smaller than the sum of its proper divisors (213318228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121422444 is a wasteful number, since it uses less digits than its factorization.

121422444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5487 (or 5472 counting only the distinct ones).

The product of its digits is 2048, while the sum is 24.

The square root of 121422444 is about 11019.1852693382. The cubic root of 121422444 is about 495.1836804301.

Adding to 121422444 its reverse (444224121), we get a palindrome (565646565).

The spelling of 121422444 in words is "one hundred twenty-one million, four hundred twenty-two thousand, four hundred forty-four".