1230421212 has 96 divisors (see below), whose sum is σ = 3248537600. Its totient is φ = 402687936.

The previous prime is 1230421201. The next prime is 1230421219. The reversal of 1230421212 is 2121240321.

It is a happy number.

1230421212 is a `hidden beast` number, since 1 + 2 + 30 + 421 + 212 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230421219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1494633 + ... + 1495455.

Almost surely, 2^1230421212 is an apocalyptic number.

1230421212 is a gapful number since it is divisible by the number (12) 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 1230421212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1624268800).

1230421212 is an abundant number, since it is smaller than the sum of its proper divisors (2018116388).

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

1230421212 is a wasteful number, since it uses less digits than its factorization.

1230421212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072 (or 1064 counting only the distinct ones).

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

The square root of 1230421212 is about 35077.3603909986. The cubic root of 1230421212 is about 1071.5635603178.

Adding to 1230421212 its reverse (2121240321), we get a palindrome (3351661533).

The spelling of 1230421212 in words is "one billion, two hundred thirty million, four hundred twenty-one thousand, two hundred twelve".