20021112111301 has 16 divisors (see below), whose sum is σ = 23656224365568. Its totient is φ = 16581465446400.

The previous prime is 20021112111289. The next prime is 20021112111311. The reversal of 20021112111301 is 10311121112002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20021112111301 - 2¹⁷ = 20021111980229 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 (20021112111311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71829070 + ... + 72107263.

It is an arithmetic number, because the mean of its divisors is an integer number (1478514022848).

Almost surely, 2^{20021112111301} is an apocalyptic number.

It is an amenable number.

20021112111301 is a deficient number, since it is larger than the sum of its proper divisors (3635112254267).

20021112111301 is a wasteful number, since it uses less digits than its factorization.

20021112111301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143937012.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 20021112111301 its reverse (10311121112002), we get a palindrome (30332233223303).

The spelling of 20021112111301 in words is "twenty trillion, twenty-one billion, one hundred twelve million, one hundred eleven thousand, three hundred one".