11220503445 has 24 divisors (see below), whose sum is σ = 19590845976. Its totient is φ = 5940584448.

The previous prime is 11220503429. The next prime is 11220503461. The reversal of 11220503445 is 54430502211.

11220503445 is a `hidden beast` number, since 1 + 12 + 205 + 0 + 3 + 445 = 666.

It is an interprime number because it is at equal distance from previous prime (11220503429) and next prime (11220503461).

It can be written as a sum of positive squares in 4 ways, for example, as 4254431076 + 6966072369 = 65226^2 + 83463^2 .

It is not a de Polignac number, because 11220503445 - 2⁴ = 11220503429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 903852 + ... + 916181.

It is an arithmetic number, because the mean of its divisors is an integer number (816285249).

Almost surely, 2^11220503445 is an apocalyptic number.

11220503445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11220503445 is a deficient number, since it is larger than the sum of its proper divisors (8370342531).

11220503445 is a wasteful number, since it uses less digits than its factorization.

11220503445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820181 (or 1820178 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 11220503445 in words is "eleven billion, two hundred twenty million, five hundred three thousand, four hundred forty-five".