122221240 has 32 divisors (see below), whose sum is σ = 275328000. Its totient is φ = 48829824.

The previous prime is 122221207. The next prime is 122221259. The reversal of 122221240 is 42122221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49966 + ... + 52354.

It is an arithmetic number, because the mean of its divisors is an integer number (8604000).

Almost surely, 2^122221240 is an apocalyptic number.

122221240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122221240 is an abundant number, since it is smaller than the sum of its proper divisors (153106760).

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

122221240 is a wasteful number, since it uses less digits than its factorization.

122221240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679 (or 3675 counting only the distinct ones).

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

The square root of 122221240 is about 11055.3715450906. The cubic root of 122221240 is about 496.2671882496.

Adding to 122221240 its reverse (42122221), we get a palindrome (164343461).

The spelling of 122221240 in words is "one hundred twenty-two million, two hundred twenty-one thousand, two hundred forty".