21202141334311 has 4 divisors (see below), whose sum is σ = 24231018667792. Its totient is φ = 18173264000832.

The previous prime is 21202141334281. The next prime is 21202141334377. The reversal of 21202141334311 is 11343314120212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21202141334311 - 2⁴¹ = 19003118078759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21202141334311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202141334411) 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, 1514438666730 + ... + 1514438666743.

It is an arithmetic number, because the mean of its divisors is an integer number (6057754666948).

Almost surely, 2^{21202141334311} is an apocalyptic number.

21202141334311 is a deficient number, since it is larger than the sum of its proper divisors (3028877333481).

21202141334311 is an equidigital number, since it uses as much as digits as its factorization.

21202141334311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028877333480.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 21202141334311 its reverse (11343314120212), we get a palindrome (32545455454523).

The spelling of 21202141334311 in words is "twenty-one trillion, two hundred two billion, one hundred forty-one million, three hundred thirty-four thousand, three hundred eleven".