122154224140 has 144 divisors (see below), whose sum is σ = 280665665280. Its totient is φ = 44636417280.

The previous prime is 122154224089. The next prime is 122154224147. The reversal of 122154224140 is 41422451221.

It is a junction number, because it is equal to n+sod(n) for n = 122154224099 and 122154224108.

It is not an unprimeable number, because it can be changed into a prime (122154224147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 213930055 + ... + 213930625.

It is an arithmetic number, because the mean of its divisors is an integer number (1949067120).

Almost surely, 2^122154224140 is an apocalyptic number.

122154224140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122154224140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140332832640).

122154224140 is an abundant number, since it is smaller than the sum of its proper divisors (158511441140).

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

122154224140 is a wasteful number, since it uses less digits than its factorization.

122154224140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 122154224140 its reverse (41422451221), we get a palindrome (163576675361).

The spelling of 122154224140 in words is "one hundred twenty-two billion, one hundred fifty-four million, two hundred twenty-four thousand, one hundred forty".