122143312 has 10 divisors (see below), whose sum is σ = 236652698. Its totient is φ = 61071648.

The previous prime is 122143279. The next prime is 122143313. The reversal of 122143312 is 213341221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 119596096 + 2547216 = 10936^2 + 1596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 122143312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122143313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3816963 + ... + 3816994.

Almost surely, 2^122143312 is an apocalyptic number.

It is an amenable number.

122143312 is a deficient number, since it is larger than the sum of its proper divisors (114509386).

122143312 is an equidigital number, since it uses as much as digits as its factorization.

122143312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7633965 (or 7633959 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 122143312 is about 11051.8465425466. The cubic root of 122143312 is about 496.1616928609.

Adding to 122143312 its reverse (213341221), we get a palindrome (335484533).

The spelling of 122143312 in words is "one hundred twenty-two million, one hundred forty-three thousand, three hundred twelve".