21001311101302 has 32 divisors (see below), whose sum is σ = 36438595087104. Its totient is φ = 8891490420000.

The previous prime is 21001311101273. The next prime is 21001311101321. The reversal of 21001311101302 is 20310111310012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 15925552 + ... + 17193772.

It is an arithmetic number, because the mean of its divisors is an integer number (1138706096472).

Almost surely, 2^{21001311101302} is an apocalyptic number.

21001311101302 is a deficient number, since it is larger than the sum of its proper divisors (15437283985802).

21001311101302 is a wasteful number, since it uses less digits than its factorization.

21001311101302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282564.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 21001311101302 its reverse (20310111310012), we get a palindrome (41311422411314).

The spelling of 21001311101302 in words is "twenty-one trillion, one billion, three hundred eleven million, one hundred one thousand, three hundred two".