122123244440 has 128 divisors (see below), whose sum is σ = 299675376000. Its totient is φ = 44648153088.

The previous prime is 122123244409. The next prime is 122123244457. The reversal of 122123244440 is 44442321221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2564366 + ... + 2611554.

It is an arithmetic number, because the mean of its divisors is an integer number (2341213875).

Almost surely, 2^122123244440 is an apocalyptic number.

122123244440 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 122123244440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149837688000).

122123244440 is an abundant number, since it is smaller than the sum of its proper divisors (177552131560).

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

122123244440 is a wasteful number, since it uses less digits than its factorization.

122123244440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47349 (or 47345 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 122123244440 its reverse (44442321221), we get a palindrome (166565565661).

The spelling of 122123244440 in words is "one hundred twenty-two billion, one hundred twenty-three million, two hundred forty-four thousand, four hundred forty".