20011221102313 has 8 divisors (see below), whose sum is σ = 22870591634880. Its totient is φ = 17152006734960.

The previous prime is 20011221102287. The next prime is 20011221102317. The reversal of 20011221102313 is 31320112211002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011221102313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011221102317) 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, 38766583 + ... + 39279388.

It is an arithmetic number, because the mean of its divisors is an integer number (2858823954360).

Almost surely, 2^{20011221102313} is an apocalyptic number.

It is an amenable number.

20011221102313 is a deficient number, since it is larger than the sum of its proper divisors (2859370532567).

20011221102313 is an equidigital number, since it uses as much as digits as its factorization.

20011221102313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78082607.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20011221102313 its reverse (31320112211002), we get a palindrome (51331333313315).

The spelling of 20011221102313 in words is "twenty trillion, eleven billion, two hundred twenty-one million, one hundred two thousand, three hundred thirteen".