2421232455556 has 12 divisors (see below), whose sum is σ = 4237416843660. Its totient is φ = 1210541928800.

The previous prime is 2421232455553. The next prime is 2421232455589. The reversal of 2421232455556 is 6555542321242.

It can be written as a sum of positive squares in 2 ways, for example, as 758205562500 + 1663026893056 = 870750^2 + 1289584^2 .

It is not an unprimeable number, because it can be changed into a prime (2421232455553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18501391 + ... + 18631798.

It is an arithmetic number, because the mean of its divisors is an integer number (353118070305).

Almost surely, 2^{2421232455556} is an apocalyptic number.

It is an amenable number.

2421232455556 is a deficient number, since it is larger than the sum of its proper divisors (1816184388104).

2421232455556 is a wasteful number, since it uses less digits than its factorization.

2421232455556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37149494 (or 37149492 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 46.

Adding to 2421232455556 its reverse (6555542321242), we get a palindrome (8976774776798).

The spelling of 2421232455556 in words is "two trillion, four hundred twenty-one billion, two hundred thirty-two million, four hundred fifty-five thousand, five hundred fifty-six".