421210012 has 12 divisors (see below), whose sum is σ = 775913320. Its totient is φ = 199520496.

The previous prime is 421210001. The next prime is 421210021. The reversal of 421210012 is 210012124.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 421209974 and 421210001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2771043 + ... + 2771194.

Almost surely, 2^421210012 is an apocalyptic number.

It is an amenable number.

421210012 is a deficient number, since it is larger than the sum of its proper divisors (354703308).

421210012 is a wasteful number, since it uses less digits than its factorization.

421210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5542260 (or 5542258 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 421210012 is about 20523.4015699153. The cubic root of 421210012 is about 749.6057258038.

Adding to 421210012 its reverse (210012124), we get a palindrome (631222136).

The spelling of 421210012 in words is "four hundred twenty-one million, two hundred ten thousand, twelve".