1021133331 has 32 divisors (see below), whose sum is σ = 1565202240. Its totient is φ = 657504000.

The previous prime is 1021133303. The next prime is 1021133371. The reversal of 1021133331 is 1333311201.

It is a happy number.

1021133331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021133331 - 2¹¹ = 1021131283 is a prime.

It is a super-2 number, since 2×1021133331² = 2085426559358311122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021133371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107241 + ... + 116373.

It is an arithmetic number, because the mean of its divisors is an integer number (48912570).

Almost surely, 2^1021133331 is an apocalyptic number.

1021133331 is a deficient number, since it is larger than the sum of its proper divisors (544068909).

1021133331 is a wasteful number, since it uses less digits than its factorization.

1021133331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9284 (or 9278 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1021133331 is about 31955.1769045330. The cubic root of 1021133331 is about 1006.9953940214.

Adding to 1021133331 its reverse (1333311201), we get a palindrome (2354444532).

The spelling of 1021133331 in words is "one billion, twenty-one million, one hundred thirty-three thousand, three hundred thirty-one".