20131133221223 has 4 divisors (see below), whose sum is σ = 20780524615488. Its totient is φ = 19481741826960.

The previous prime is 20131133221187. The next prime is 20131133221271. The reversal of 20131133221223 is 32212233113102.

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 20131133221223 - 2¹² = 20131133217127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20131133221192 and 20131133221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131133229223) 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, 324695697086 + ... + 324695697147.

It is an arithmetic number, because the mean of its divisors is an integer number (5195131153872).

Almost surely, 2^{20131133221223} is an apocalyptic number.

20131133221223 is a deficient number, since it is larger than the sum of its proper divisors (649391394265).

20131133221223 is an equidigital number, since it uses as much as digits as its factorization.

20131133221223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649391394264.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20131133221223 its reverse (32212233113102), we get a palindrome (52343366334325).

The spelling of 20131133221223 in words is "twenty trillion, one hundred thirty-one billion, one hundred thirty-three million, two hundred twenty-one thousand, two hundred twenty-three".