1220550045514 has 4 divisors (see below), whose sum is σ = 1830825068274. Its totient is φ = 610275022756.

The previous prime is 1220550045511. The next prime is 1220550045523. The reversal of 1220550045514 is 4155400550221.

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., 1157093916489 + 63456129025 = 1075683^2 + 251905^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1220550045514.

It is not an unprimeable number, because it can be changed into a prime (1220550045511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305137511377 + ... + 305137511380.

Almost surely, 2^{1220550045514} is an apocalyptic number.

1220550045514 is a deficient number, since it is larger than the sum of its proper divisors (610275022760).

1220550045514 is an equidigital number, since it uses as much as digits as its factorization.

1220550045514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610275022759.

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 1220550045514 its reverse (4155400550221), we get a palindrome (5375950595735).

The spelling of 1220550045514 in words is "one trillion, two hundred twenty billion, five hundred fifty million, forty-five thousand, five hundred fourteen".