11445122420 has 12 divisors (see below), whose sum is σ = 24034757124. Its totient is φ = 4578048960.

The previous prime is 11445122399. The next prime is 11445122509. The reversal of 11445122420 is 2422154411.

It can be written as a sum of positive squares in 2 ways, for example, as 5214861796 + 6230260624 = 72214^2 + 78932^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11445122420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286128041 + ... + 286128080.

It is an arithmetic number, because the mean of its divisors is an integer number (2002896427).

Almost surely, 2^11445122420 is an apocalyptic number.

11445122420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11445122420 is an abundant number, since it is smaller than the sum of its proper divisors (12589634704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11445122420 is a wasteful number, since it uses less digits than its factorization.

11445122420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572256130 (or 572256128 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 11445122420 its reverse (2422154411), we get a palindrome (13867276831).

The spelling of 11445122420 in words is "eleven billion, four hundred forty-five million, one hundred twenty-two thousand, four hundred twenty".