10421212 has 6 divisors (see below), whose sum is σ = 18237128. Its totient is φ = 5210604.

The previous prime is 10421207. The next prime is 10421233. The reversal of 10421212 is 21212401.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10421192 and 10421201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302648 + ... + 1302655.

Almost surely, 2^10421212 is an apocalyptic number.

It is an amenable number.

10421212 is a deficient number, since it is larger than the sum of its proper divisors (7815916).

10421212 is a wasteful number, since it uses less digits than its factorization.

10421212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605307 (or 2605305 counting only the distinct ones).

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

The square root of 10421212 is about 3228.1902050530. The cubic root of 10421212 is about 218.4268772801.

Adding to 10421212 its reverse (21212401), we get a palindrome (31633613).

It can be divided in two parts, 104 and 21212, that added together give a square (21316 = 146²).

The spelling of 10421212 in words is "ten million, four hundred twenty-one thousand, two hundred twelve".