1002021212 has 6 divisors (see below), whose sum is σ = 1753537128. Its totient is φ = 501010604.

The previous prime is 1002021179. The next prime is 1002021239. The reversal of 1002021212 is 2121202001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1002021193 and 1002021202.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 125252648 + ... + 125252655.

It is an arithmetic number, because the mean of its divisors is an integer number (292256188).

Almost surely, 2^1002021212 is an apocalyptic number.

It is an amenable number.

1002021212 is a deficient number, since it is larger than the sum of its proper divisors (751515916).

1002021212 is a wasteful number, since it uses less digits than its factorization.

1002021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250505307 (or 250505305 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1002021212 is about 31654.7186371953. The cubic root of 1002021212 is about 1000.6732839204.

Adding to 1002021212 its reverse (2121202001), we get a palindrome (3123223213).

The spelling of 1002021212 in words is "one billion, two million, twenty-one thousand, two hundred twelve".