122212140 has 24 divisors (see below), whose sum is σ = 342194160. Its totient is φ = 32589888.

The previous prime is 122212093. The next prime is 122212141. The reversal of 122212140 is 41212221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (122212141) 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, 1018375 + ... + 1018494.

It is an arithmetic number, because the mean of its divisors is an integer number (14258090).

Almost surely, 2^122212140 is an apocalyptic number.

122212140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122212140 is an abundant number, since it is smaller than the sum of its proper divisors (219982020).

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

122212140 is a wasteful number, since it uses less digits than its factorization.

122212140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036881 (or 2036879 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 122212140 is about 11054.9599727905. The cubic root of 122212140 is about 496.2548713956.

Adding to 122212140 its reverse (41212221), we get a palindrome (163424361).

The spelling of 122212140 in words is "one hundred twenty-two million, two hundred twelve thousand, one hundred forty".