122221424440 has 32 divisors (see below), whose sum is σ = 276139298160. Its totient is φ = 48685708800.

The previous prime is 122221424399. The next prime is 122221424443. The reversal of 122221424440 is 44424122221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122221424399 and 122221424408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221424443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6329646 + ... + 6348925.

Almost surely, 2^122221424440 is an apocalyptic number.

122221424440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122221424440 is an abundant number, since it is smaller than the sum of its proper divisors (153917873720).

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

122221424440 is a wasteful number, since it uses less digits than its factorization.

122221424440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12678823 (or 12678819 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 122221424440 its reverse (44424122221), we get a palindrome (166645546661).

The spelling of 122221424440 in words is "one hundred twenty-two billion, two hundred twenty-one million, four hundred twenty-four thousand, four hundred forty".