122143212 has 18 divisors (see below), whose sum is σ = 308750988. Its totient is φ = 40714392.

The previous prime is 122143199. The next prime is 122143213. The reversal of 122143212 is 212341221.

It is a happy number.

122143212 is a `hidden beast` number, since 1 + 221 + 432 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (122143213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1696398 + ... + 1696469.

Almost surely, 2^122143212 is an apocalyptic number.

122143212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122143212 is an abundant number, since it is smaller than the sum of its proper divisors (186607776).

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

122143212 is a wasteful number, since it uses less digits than its factorization.

122143212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392877 (or 3392872 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 122143212 is about 11051.8420184148. The cubic root of 122143212 is about 496.1615574567.

Adding to 122143212 its reverse (212341221), we get a palindrome (334484433).

The spelling of 122143212 in words is "one hundred twenty-two million, one hundred forty-three thousand, two hundred twelve".