122143220 has 48 divisors (see below), whose sum is σ = 265077120. Its totient is φ = 47246976.

The previous prime is 122143213. The next prime is 122143261. The reversal of 122143220 is 22341221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93089 + ... + 94391.

It is an arithmetic number, because the mean of its divisors is an integer number (5522440).

Almost surely, 2^122143220 is an apocalyptic number.

122143220 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 122143220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132538560).

122143220 is an abundant number, since it is smaller than the sum of its proper divisors (142933900).

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

122143220 is a wasteful number, since it uses less digits than its factorization.

122143220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464 (or 1462 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 122143220 is about 11051.8423803455. The cubic root of 122143220 is about 496.1615682890.

Adding to 122143220 its reverse (22341221), we get a palindrome (144484441).

The spelling of 122143220 in words is "one hundred twenty-two million, one hundred forty-three thousand, two hundred twenty".