1033012020221 has 2 divisors, whose sum is σ = 1033012020222. Its totient is φ = 1033012020220.

The previous prime is 1033012020217. The next prime is 1033012020233. The reversal of 1033012020221 is 1220202103301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 760141603321 + 272870416900 = 871861^2 + 522370^2 .

It is a cyclic number.

It is not a de Polignac number, because 1033012020221 - 2² = 1033012020217 is a prime.

It is a super-2 number, since 2×1033012020221² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1033012020221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1033012020211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 516506010110 + 516506010111.

It is an arithmetic number, because the mean of its divisors is an integer number (516506010111).

Almost surely, 2^{1033012020221} is an apocalyptic number.

It is an amenable number.

1033012020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1033012020221 is an equidigital number, since it uses as much as digits as its factorization.

1033012020221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1033012020221 its reverse (1220202103301), we get a palindrome (2253214123522).

The spelling of 1033012020221 in words is "one trillion, thirty-three billion, twelve million, twenty thousand, two hundred twenty-one".