1220330020021 has 16 divisors (see below), whose sum is σ = 1432500499584. Its totient is φ = 1017624631104.

The previous prime is 1220330019973. The next prime is 1220330020033. The reversal of 1220330020021 is 1200200330221.

It is a cyclic number.

It is not a de Polignac number, because 1220330020021 - 2⁷ = 1220330019893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220330019977 and 1220330020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220330020061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2400411 + ... + 2864023.

It is an arithmetic number, because the mean of its divisors is an integer number (89531281224).

Almost surely, 2^{1220330020021} is an apocalyptic number.

It is an amenable number.

1220330020021 is a deficient number, since it is larger than the sum of its proper divisors (212170479563).

1220330020021 is a wasteful number, since it uses less digits than its factorization.

1220330020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473820.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1220330020021 its reverse (1200200330221), we get a palindrome (2420530350242).

The spelling of 1220330020021 in words is "one trillion, two hundred twenty billion, three hundred thirty million, twenty thousand, twenty-one".