1223101530540 has 72 divisors (see below), whose sum is σ = 3789012427200. Its totient is φ = 319220822784.

The previous prime is 1223101530503. The next prime is 1223101530559. The reversal of 1223101530540 is 450351013221.

1223101530540 is a `hidden beast` number, since 1 + 2 + 2 + 310 + 1 + 5 + 305 + 40 = 666.

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, 72278865 + ... + 72295784.

It is an arithmetic number, because the mean of its divisors is an integer number (52625172600).

Almost surely, 2^{1223101530540} is an apocalyptic number.

1223101530540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223101530540 is an abundant number, since it is smaller than the sum of its proper divisors (2565910896660).

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

1223101530540 is a wasteful number, since it uses less digits than its factorization.

1223101530540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144574711 (or 144574706 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 1223101530540 its reverse (450351013221), we get a palindrome (1673452543761).

The spelling of 1223101530540 in words is "one trillion, two hundred twenty-three billion, one hundred one million, five hundred thirty thousand, five hundred forty".