1021213133 has 16 divisors (see below), whose sum is σ = 1103279616. Its totient is φ = 942860160.

The previous prime is 1021213111. The next prime is 1021213247. The reversal of 1021213133 is 3313121201.

It is a de Polignac number, because none of the positive numbers 2^k-1021213133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021213033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72443 + ... + 85383.

It is an arithmetic number, because the mean of its divisors is an integer number (68954976).

Almost surely, 2^1021213133 is an apocalyptic number.

It is an amenable number.

1021213133 is a deficient number, since it is larger than the sum of its proper divisors (82066483).

1021213133 is a wasteful number, since it uses less digits than its factorization.

1021213133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13084.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1021213133 is about 31956.4255354068. The cubic root of 1021213133 is about 1007.0216257095.

Adding to 1021213133 its reverse (3313121201), we get a palindrome (4334334334).

The spelling of 1021213133 in words is "one billion, twenty-one million, two hundred thirteen thousand, one hundred thirty-three".