1021212008 has 16 divisors (see below), whose sum is σ = 1916244000. Its totient is φ = 510213616.

The previous prime is 1021212007. The next prime is 1021212043. The reversal of 1021212008 is 8002121201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1021212007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37838 + ... + 58941.

It is an arithmetic number, because the mean of its divisors is an integer number (119765250).

Almost surely, 2^1021212008 is an apocalyptic number.

It is an amenable number.

1021212008 is a deficient number, since it is larger than the sum of its proper divisors (895031992).

1021212008 is a wasteful number, since it uses less digits than its factorization.

1021212008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98104 (or 98100 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1021212008 is about 31956.4079333081. The cubic root of 1021212008 is about 1007.0212559206.

Adding to 1021212008 its reverse (8002121201), we get a palindrome (9023333209).

The spelling of 1021212008 in words is "one billion, twenty-one million, two hundred twelve thousand, eight".