20213221031311 has 8 divisors (see below), whose sum is σ = 25200898948224. Its totient is φ = 15750561842520.

The previous prime is 20213221031279. The next prime is 20213221031327. The reversal of 20213221031311 is 11313012231202.

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 20213221031311 - 2⁵ = 20213221031279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213221071311) 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, 131254681945 + ... + 131254682098.

It is an arithmetic number, because the mean of its divisors is an integer number (3150112368528).

Almost surely, 2^{20213221031311} is an apocalyptic number.

20213221031311 is a deficient number, since it is larger than the sum of its proper divisors (4987677916913).

20213221031311 is a wasteful number, since it uses less digits than its factorization.

20213221031311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262509364061.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20213221031311 its reverse (11313012231202), we get a palindrome (31526233262513).

The spelling of 20213221031311 in words is "twenty trillion, two hundred thirteen billion, two hundred twenty-one million, thirty-one thousand, three hundred eleven".