11621603313021 has 12 divisors (see below), whose sum is σ = 16779119576928. Its totient is φ = 7151755884624.

The previous prime is 11621603313013. The next prime is 11621603313071. The reversal of 11621603313021 is 12031330612611.

It is not a de Polignac number, because 11621603313021 - 2³ = 11621603313013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11621603313021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621603313071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11461146745 + ... + 11461147758.

It is an arithmetic number, because the mean of its divisors is an integer number (1398259964744).

Almost surely, 2^{11621603313021} is an apocalyptic number.

It is an amenable number.

11621603313021 is a deficient number, since it is larger than the sum of its proper divisors (5157516263907).

11621603313021 is a wasteful number, since it uses less digits than its factorization.

11621603313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22922294532 (or 22922294519 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

Adding to 11621603313021 its reverse (12031330612611), we get a palindrome (23652933925632).

The spelling of 11621603313021 in words is "eleven trillion, six hundred twenty-one billion, six hundred three million, three hundred thirteen thousand, twenty-one".