20131022221301 has 4 divisors (see below), whose sum is σ = 20133488964204. Its totient is φ = 20128555478400.

The previous prime is 20131022221241. The next prime is 20131022221313. The reversal of 20131022221301 is 10312222013102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3975437822500 + 16155584398801 = 1993850^2 + 4019401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20131022221301 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 (20131022221391) 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, 1233359210 + ... + 1233375531.

It is an arithmetic number, because the mean of its divisors is an integer number (5033372241051).

Almost surely, 2^{20131022221301} is an apocalyptic number.

It is an amenable number.

20131022221301 is a deficient number, since it is larger than the sum of its proper divisors (2466742903).

20131022221301 is an equidigital number, since it uses as much as digits as its factorization.

20131022221301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466742902.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20131022221301 its reverse (10312222013102), we get a palindrome (30443244234403).

The spelling of 20131022221301 in words is "twenty trillion, one hundred thirty-one billion, twenty-two million, two hundred twenty-one thousand, three hundred one".