21101311021330 has 32 divisors (see below), whose sum is σ = 40585576117680. Its totient is φ = 7871142021120.

The previous prime is 21101311021291. The next prime is 21101311021333. The reversal of 21101311021330 is 3312011310112.

It can be written as a sum of positive squares in 8 ways, for example, as 18689461643161 + 2411849378169 = 4323131^2 + 1553013^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21101311021298 and 21101311021307.

It is not an unprimeable number, because it can be changed into a prime (21101311021333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569363851 + ... + 569400910.

Almost surely, 2^{21101311021330} is an apocalyptic number.

21101311021330 is a deficient number, since it is larger than the sum of its proper divisors (19484265096350).

21101311021330 is a wasteful number, since it uses less digits than its factorization.

21101311021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138764894.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 21101311021330 its reverse (3312011310112), we get a palindrome (24413322331442).

The spelling of 21101311021330 in words is "twenty-one trillion, one hundred one billion, three hundred eleven million, twenty-one thousand, three hundred thirty".