21311123122301 has 8 divisors (see below), whose sum is σ = 21342501967680. Its totient is φ = 21279755191968.

The previous prime is 21311123122231. The next prime is 21311123122307. The reversal of 21311123122301 is 10322132111312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21311123122301 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 (21311123122307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183145 + ... + 6634913.

It is an arithmetic number, because the mean of its divisors is an integer number (2667812745960).

Almost surely, 2^{21311123122301} is an apocalyptic number.

It is an amenable number.

21311123122301 is a deficient number, since it is larger than the sum of its proper divisors (31378845379).

21311123122301 is an equidigital number, since it uses as much as digits as its factorization.

21311123122301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457523.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 21311123122301 its reverse (10322132111312), we get a palindrome (31633255233613).

The spelling of 21311123122301 in words is "twenty-one trillion, three hundred eleven billion, one hundred twenty-three million, one hundred twenty-two thousand, three hundred one".