21113331365302 has 24 divisors (see below), whose sum is σ = 34811697993408. Its totient is φ = 9596727631920.

The previous prime is 21113331365237. The next prime is 21113331365303. The reversal of 21113331365302 is 20356313331112.

It is a super-2 number, since 2×21113331365302² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113331365303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8735448 + ... + 10887364.

It is an arithmetic number, because the mean of its divisors is an integer number (1450487416392).

Almost surely, 2^{21113331365302} is an apocalyptic number.

21113331365302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21113331365302 is a deficient number, since it is larger than the sum of its proper divisors (13698366628106).

21113331365302 is a wasteful number, since it uses less digits than its factorization.

21113331365302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192484 (or 2192473 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 34.

Adding to 21113331365302 its reverse (20356313331112), we get a palindrome (41469644696414).

The spelling of 21113331365302 in words is "twenty-one trillion, one hundred thirteen billion, three hundred thirty-one million, three hundred sixty-five thousand, three hundred two".