1021220033 has 8 divisors (see below), whose sum is σ = 1069588800. Its totient is φ = 973181968.

The previous prime is 1021220027. The next prime is 1021220069. The reversal of 1021220033 is 3300221201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021220033 - 2⁸ = 1021219777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1021220533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76343 + ... + 88716.

It is an arithmetic number, because the mean of its divisors is an integer number (133698600).

Almost surely, 2^1021220033 is an apocalyptic number.

It is an amenable number.

1021220033 is a deficient number, since it is larger than the sum of its proper divisors (48368767).

1021220033 is a wasteful number, since it uses less digits than its factorization.

1021220033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165351.

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

The square root of 1021220033 is about 31956.5334947331. The cubic root of 1021220033 is about 1007.0238937419.

Adding to 1021220033 its reverse (3300221201), we get a palindrome (4321441234).

The spelling of 1021220033 in words is "one billion, twenty-one million, two hundred twenty thousand, thirty-three".