1220443255354 has 4 divisors (see below), whose sum is σ = 1830664883034. Its totient is φ = 610221627676.

The previous prime is 1220443255333. The next prime is 1220443255363. The reversal of 1220443255354 is 4535523440221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 951473439225 + 268969816129 = 975435^2 + 518623^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305110813837 + ... + 305110813840.

Almost surely, 2^{1220443255354} is an apocalyptic number.

1220443255354 is a deficient number, since it is larger than the sum of its proper divisors (610221627680).

1220443255354 is an equidigital number, since it uses as much as digits as its factorization.

1220443255354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610221627679.

The product of its (nonzero) digits is 576000, while the sum is 40.

Adding to 1220443255354 its reverse (4535523440221), we get a palindrome (5755966695575).

The spelling of 1220443255354 in words is "one trillion, two hundred twenty billion, four hundred forty-three million, two hundred fifty-five thousand, three hundred fifty-four".