1220420420132 has 6 divisors (see below), whose sum is σ = 2135735735238. Its totient is φ = 610210210064.

The previous prime is 1220420420077. The next prime is 1220420420147. The reversal of 1220420420132 is 2310240240221.

It can be written as a sum of positive squares in only one way, i.e., 654037743076 + 566382677056 = 808726^2 + 752584^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220420420098 and 1220420420107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152552552513 + ... + 152552552520.

It is an arithmetic number, because the mean of its divisors is an integer number (355955955873).

Almost surely, 2^{1220420420132} is an apocalyptic number.

It is an amenable number.

1220420420132 is a deficient number, since it is larger than the sum of its proper divisors (915315315106).

1220420420132 is a wasteful number, since it uses less digits than its factorization.

1220420420132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305105105037 (or 305105105035 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 1220420420132 its reverse (2310240240221), we get a palindrome (3530660660353).

The spelling of 1220420420132 in words is "one trillion, two hundred twenty billion, four hundred twenty million, four hundred twenty thousand, one hundred thirty-two".