1021213308 has 48 divisors (see below), whose sum is σ = 2474388000. Its totient is φ = 327414528.

The previous prime is 1021213289. The next prime is 1021213313. The reversal of 1021213308 is 8033121201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88158 + ... + 99066.

It is an arithmetic number, because the mean of its divisors is an integer number (51549750).

Almost surely, 2^1021213308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021213308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1237194000).

1021213308 is an abundant number, since it is smaller than the sum of its proper divisors (1453174692).

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

1021213308 is a wasteful number, since it uses less digits than its factorization.

1021213308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11214 (or 11212 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1021213308 is about 31956.4282735102. The cubic root of 1021213308 is about 1007.0216832321.

Adding to 1021213308 its reverse (8033121201), we get a palindrome (9054334509).

The spelling of 1021213308 in words is "one billion, twenty-one million, two hundred thirteen thousand, three hundred eight".