11220020450 has 24 divisors (see below), whose sum is σ = 20900309988. Its totient is φ = 4481326080.

The previous prime is 11220020443. The next prime is 11220020479. The reversal of 11220020450 is 5402002211.

It can be written as a sum of positive squares in 6 ways, for example, as 2277102961 + 8942917489 = 47719^2 + 94567^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133067 + ... + 200366.

Almost surely, 2^11220020450 is an apocalyptic number.

11220020450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11220020450 is a deficient number, since it is larger than the sum of its proper divisors (9680289538).

11220020450 is a wasteful number, since it uses less digits than its factorization.

11220020450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334118 (or 334113 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 11220020450 its reverse (5402002211), we get a palindrome (16622022661).

The spelling of 11220020450 in words is "eleven billion, two hundred twenty million, twenty thousand, four hundred fifty".