1220033310021 has 6 divisors (see below), whose sum is σ = 1762270336710. Its totient is φ = 813355540008.

The previous prime is 1220033310019. The next prime is 1220033310047. The reversal of 1220033310021 is 1200133300221.

1220033310021 is a `hidden beast` number, since 12 + 200 + 333 + 100 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 723156348996 + 496876961025 = 850386^2 + 704895^2 .

It is not a de Polignac number, because 1220033310021 - 2¹ = 1220033310019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220033309976 and 1220033310003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220033300021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67779628326 + ... + 67779628343.

It is an arithmetic number, because the mean of its divisors is an integer number (293711722785).

Almost surely, 2^{1220033310021} is an apocalyptic number.

It is an amenable number.

1220033310021 is a deficient number, since it is larger than the sum of its proper divisors (542237026689).

1220033310021 is a wasteful number, since it uses less digits than its factorization.

1220033310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135559256675 (or 135559256672 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1220033310021 its reverse (1200133300221), we get a palindrome (2420166610242).

The spelling of 1220033310021 in words is "one trillion, two hundred twenty billion, thirty-three million, three hundred ten thousand, twenty-one".