20131222133 has 16 divisors (see below), whose sum is σ = 23203195200. Its totient is φ = 17273393280.

The previous prime is 20131222127. The next prime is 20131222147. The reversal of 20131222133 is 33122213102.

It is a de Polignac number, because none of the positive numbers 2^k-20131222133 is a prime.

It is a super-2 number, since 2×20131222133² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131222103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122816 + ... + 235257.

It is an arithmetic number, because the mean of its divisors is an integer number (1450199700).

Almost surely, 2^20131222133 is an apocalyptic number.

It is an amenable number.

20131222133 is a deficient number, since it is larger than the sum of its proper divisors (3071973067).

20131222133 is a wasteful number, since it uses less digits than its factorization.

20131222133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358372.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20131222133 its reverse (33122213102), we get a palindrome (53253435235).

The spelling of 20131222133 in words is "twenty billion, one hundred thirty-one million, two hundred twenty-two thousand, one hundred thirty-three".