122217240 has 32 divisors (see below), whose sum is σ = 366652080. Its totient is φ = 32591232.

The previous prime is 122217149. The next prime is 122217259. The reversal of 122217240 is 42712221.

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, 509119 + ... + 509358.

Almost surely, 2^122217240 is an apocalyptic number.

122217240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122217240 is an abundant number, since it is smaller than the sum of its proper divisors (244434840).

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

122217240 is a wasteful number, since it uses less digits than its factorization.

122217240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018491 (or 1018487 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 122217240 is about 11055.1906360768. The cubic root of 122217240 is about 496.2617743232.

Adding to 122217240 its reverse (42712221), we get a palindrome (164929461).

The spelling of 122217240 in words is "one hundred twenty-two million, two hundred seventeen thousand, two hundred forty".