1021233013 has 4 divisors (see below), whose sum is σ = 1027136268. Its totient is φ = 1015329760.

The previous prime is 1021233001. The next prime is 1021233029. The reversal of 1021233013 is 3103321201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 741908644 + 279324369 = 27238^2 + 16713^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021233013 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 (1021233613) 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, 2951368 + ... + 2951713.

It is an arithmetic number, because the mean of its divisors is an integer number (256784067).

Almost surely, 2^1021233013 is an apocalyptic number.

It is an amenable number.

1021233013 is a deficient number, since it is larger than the sum of its proper divisors (5903255).

1021233013 is an equidigital number, since it uses as much as digits as its factorization.

1021233013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903254.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1021233013 is about 31956.7365824485. The cubic root of 1021233013 is about 1007.0281602448.

Adding to 1021233013 its reverse (3103321201), we get a palindrome (4124554214).

The spelling of 1021233013 in words is "one billion, twenty-one million, two hundred thirty-three thousand, thirteen".