122012440 has 32 divisors (see below), whose sum is σ = 299486160. Its totient is φ = 44368000.

The previous prime is 122012437. The next prime is 122012441. The reversal of 122012440 is 44210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122012441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138211 + ... + 139090.

Almost surely, 2^122012440 is an apocalyptic number.

122012440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122012440 is an abundant number, since it is smaller than the sum of its proper divisors (177473720).

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

122012440 is a wasteful number, since it uses less digits than its factorization.

122012440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277323 (or 277319 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 122012440 is about 11045.9241351731. The cubic root of 122012440 is about 495.9844232881.

Adding to 122012440 its reverse (44210221), we get a palindrome (166222661).

It can be divided in two parts, 12201 and 2440, that added together give a palindrome (14641).

The spelling of 122012440 in words is "one hundred twenty-two million, twelve thousand, four hundred forty".