20131232133021 has 8 divisors (see below), whose sum is σ = 27496317059904. Its totient is φ = 13093484314080.

The previous prime is 20131232132993. The next prime is 20131232133031. The reversal of 20131232133021 is 12033123213102.

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

It is not a de Polignac number, because 20131232133021 - 2¹⁵ = 20131232100253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20131232132982 and 20131232133000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131232133031) 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, 81834276841 + ... + 81834277086.

It is an arithmetic number, because the mean of its divisors is an integer number (3437039632488).

Almost surely, 2^{20131232133021} is an apocalyptic number.

It is an amenable number.

20131232133021 is a deficient number, since it is larger than the sum of its proper divisors (7365084926883).

20131232133021 is a wasteful number, since it uses less digits than its factorization.

20131232133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163668553971.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20131232133021 its reverse (12033123213102), we get a palindrome (32164355346123).

The spelling of 20131232133021 in words is "twenty trillion, one hundred thirty-one billion, two hundred thirty-two million, one hundred thirty-three thousand, twenty-one".