20211231133313 has 16 divisors (see below), whose sum is σ = 22815676296000. Its totient is φ = 17735005135680.

The previous prime is 20211231133309. The next prime is 20211231133333. The reversal of 20211231133313 is 31333113211202.

It is a cyclic number.

It is not a de Polignac number, because 20211231133313 - 2² = 20211231133309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211231133333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8315963 + ... + 10467936.

It is an arithmetic number, because the mean of its divisors is an integer number (1425979768500).

Almost surely, 2^{20211231133313} is an apocalyptic number.

It is an amenable number.

20211231133313 is a deficient number, since it is larger than the sum of its proper divisors (2604445162687).

20211231133313 is a wasteful number, since it uses less digits than its factorization.

20211231133313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18787312.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 20211231133313 its reverse (31333113211202), we get a palindrome (51544344344515).

The spelling of 20211231133313 in words is "twenty trillion, two hundred eleven billion, two hundred thirty-one million, one hundred thirty-three thousand, three hundred thirteen".