20113223001021 has 8 divisors (see below), whose sum is σ = 29797367408960. Its totient is φ = 13408815333996.

The previous prime is 20113223000993. The next prime is 20113223001059. The reversal of 20113223001021 is 12010032231102.

20113223001021 is a `hidden beast` number, since 2 + 0 + 11 + 322 + 300 + 10 + 21 = 666.

It is not a de Polignac number, because 20113223001021 - 2¹³ = 20113222992829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20113223000985 and 20113223001003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113223001121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372467092585 + ... + 372467092638.

It is an arithmetic number, because the mean of its divisors is an integer number (3724670926120).

Almost surely, 2^{20113223001021} is an apocalyptic number.

It is an amenable number.

20113223001021 is a deficient number, since it is larger than the sum of its proper divisors (9684144407939).

20113223001021 is an equidigital number, since it uses as much as digits as its factorization.

20113223001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744934185232 (or 744934185226 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20113223001021 its reverse (12010032231102), we get a palindrome (32123255232123).

The spelling of 20113223001021 in words is "twenty trillion, one hundred thirteen billion, two hundred twenty-three million, one thousand, twenty-one".