122012240 has 80 divisors (see below), whose sum is σ = 338335488. Its totient is φ = 40009728.

The previous prime is 122012197. The next prime is 122012257. The reversal of 122012240 is 42210221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8144 + ... + 17616.

Almost surely, 2^122012240 is an apocalyptic number.

122012240 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 122012240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169167744).

122012240 is an abundant number, since it is smaller than the sum of its proper divisors (216323248).

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

122012240 is a wasteful number, since it uses less digits than its factorization.

122012240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9516 (or 9510 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 122012240 is about 11045.9150820564. The cubic root of 122012240 is about 495.9841522859.

Adding to 122012240 its reverse (42210221), we get a palindrome (164222461).

It can be divided in two parts, 12201 and 2240, that added together give a palindrome (14441).

The spelling of 122012240 in words is "one hundred twenty-two million, twelve thousand, two hundred forty".