20113021221131 has 8 divisors (see below), whose sum is σ = 20172000606240. Its totient is φ = 20054053147392.

The previous prime is 20113021221127. The next prime is 20113021221179. The reversal of 20113021221131 is 13112212031102.

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

It is a cyclic number.

It is not a de Polignac number, because 20113021221131 - 2² = 20113021221127 is a prime.

It is a super-2 number, since 2×20113021221131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113021221191) 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 7 ways as a sum of consecutive naturals, for example, 740210 + ... + 6385448.

It is an arithmetic number, because the mean of its divisors is an integer number (2521500075780).

Almost surely, 2^{20113021221131} is an apocalyptic number.

20113021221131 is a deficient number, since it is larger than the sum of its proper divisors (58979385109).

20113021221131 is a wasteful number, since it uses less digits than its factorization.

20113021221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5655685.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 20113021221131 its reverse (13112212031102), we get a palindrome (33225233252233).

The spelling of 20113021221131 in words is "twenty trillion, one hundred thirteen billion, twenty-one million, two hundred twenty-one thousand, one hundred thirty-one".