121222424 has 8 divisors (see below), whose sum is σ = 227292060. Its totient is φ = 60611208.

The previous prime is 121222421. The next prime is 121222457. The reversal of 121222424 is 424222121.

It is a tau number, because it is divible by the number of its divisors (8).

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

It is a junction number, because it is equal to n+sod(n) for n = 121222396 and 121222405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7576394 + ... + 7576409.

Almost surely, 2^121222424 is an apocalyptic number.

It is an amenable number.

121222424 is a deficient number, since it is larger than the sum of its proper divisors (106069636).

121222424 is a wasteful number, since it uses less digits than its factorization.

121222424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15152809 (or 15152805 counting only the distinct ones).

The product of its digits is 512, while the sum is 20.

The square root of 121222424 is about 11010.1055399120. The cubic root of 121222424 is about 494.9116245315.

Adding to 121222424 its reverse (424222121), we get a palindrome (545444545).

The spelling of 121222424 in words is "one hundred twenty-one million, two hundred twenty-two thousand, four hundred twenty-four".