1020021233 has 32 divisors (see below), whose sum is σ = 1350328320. Its totient is φ = 745954560.

The previous prime is 1020021229. The next prime is 1020021259. The reversal of 1020021233 is 3321200201.

It is a happy number.

It is not a de Polignac number, because 1020021233 - 2² = 1020021229 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1020021283) 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, 579008 + ... + 580766.

It is an arithmetic number, because the mean of its divisors is an integer number (42197760).

Almost surely, 2^1020021233 is an apocalyptic number.

It is an amenable number.

1020021233 is a deficient number, since it is larger than the sum of its proper divisors (330307087).

1020021233 is a wasteful number, since it uses less digits than its factorization.

1020021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1020021233 is about 31937.7712591220. The cubic root of 1020021233 is about 1006.6296943548.

Adding to 1020021233 its reverse (3321200201), we get a palindrome (4341221434).

The spelling of 1020021233 in words is "one billion, twenty million, twenty-one thousand, two hundred thirty-three".