20021233121013 has 8 divisors (see below), whose sum is σ = 26994921062400. Its totient is φ = 13197516963488.

The previous prime is 20021233120969. The next prime is 20021233121053. The reversal of 20021233121013 is 31012133212002.

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 20021233121013 - 2¹⁰ = 20021233119989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021233121053) 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, 37492945653 + ... + 37492946186.

It is an arithmetic number, because the mean of its divisors is an integer number (3374365132800).

Almost surely, 2^{20021233121013} is an apocalyptic number.

It is an amenable number.

20021233121013 is a deficient number, since it is larger than the sum of its proper divisors (6973687941387).

20021233121013 is an equidigital number, since it uses as much as digits as its factorization.

20021233121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74985891931.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20021233121013 its reverse (31012133212002), we get a palindrome (51033366333015).

The spelling of 20021233121013 in words is "twenty trillion, twenty-one billion, two hundred thirty-three million, one hundred twenty-one thousand, thirteen".