21011313122301 has 4 divisors (see below), whose sum is σ = 28015084163072. Its totient is φ = 14007542081532.

The previous prime is 21011313122297. The next prime is 21011313122311. The reversal of 21011313122301 is 10322131311012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21011313122301 - 2² = 21011313122297 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011313122311) 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, 3501885520381 + ... + 3501885520386.

It is an arithmetic number, because the mean of its divisors is an integer number (7003771040768).

Almost surely, 2^{21011313122301} is an apocalyptic number.

It is an amenable number.

21011313122301 is a deficient number, since it is larger than the sum of its proper divisors (7003771040771).

21011313122301 is an equidigital number, since it uses as much as digits as its factorization.

21011313122301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7003771040770.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21011313122301 its reverse (10322131311012), we get a palindrome (31333444433313).

The spelling of 21011313122301 in words is "twenty-one trillion, eleven billion, three hundred thirteen million, one hundred twenty-two thousand, three hundred one".