20130224211331 has 4 divisors (see below), whose sum is σ = 21678702996832. Its totient is φ = 18581745425832.

The previous prime is 20130224211319. The next prime is 20130224211353. The reversal of 20130224211331 is 13311242203102.

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 20130224211331 - 2⁷ = 20130224211203 is a prime.

It is a super-2 number, since 2×20130224211331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20130224211296 and 20130224211305.

It is not an unprimeable number, because it can be changed into a prime (20130224211631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774239392731 + ... + 774239392756.

It is an arithmetic number, because the mean of its divisors is an integer number (5419675749208).

Almost surely, 2^{20130224211331} is an apocalyptic number.

20130224211331 is a deficient number, since it is larger than the sum of its proper divisors (1548478785501).

20130224211331 is a wasteful number, since it uses less digits than its factorization.

20130224211331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548478785500.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20130224211331 its reverse (13311242203102), we get a palindrome (33441466414433).

The spelling of 20130224211331 in words is "twenty trillion, one hundred thirty billion, two hundred twenty-four million, two hundred eleven thousand, three hundred thirty-one".