20312112221011 has 8 divisors (see below), whose sum is σ = 22825651191840. Its totient is φ = 17934440221632.

The previous prime is 20312112221003. The next prime is 20312112221017. The reversal of 20312112221011 is 11012221121302.

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 20312112221011 - 2³ = 20312112221003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20312112221011.

It is not an unprimeable number, because it can be changed into a prime (20312112221017) 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, 33966742546 + ... + 33966743143.

It is an arithmetic number, because the mean of its divisors is an integer number (2853206398980).

Almost surely, 2^{20312112221011} is an apocalyptic number.

20312112221011 is a deficient number, since it is larger than the sum of its proper divisors (2513538970829).

20312112221011 is a wasteful number, since it uses less digits than its factorization.

20312112221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67933485725.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 20312112221011 its reverse (11012221121302), we get a palindrome (31324333342313).

The spelling of 20312112221011 in words is "twenty trillion, three hundred twelve billion, one hundred twelve million, two hundred twenty-one thousand, eleven".