20201200213321 has 12 divisors (see below), whose sum is σ = 21456178941252. Its totient is φ = 19016081139744.

The previous prime is 20201200213223. The next prime is 20201200213373. The reversal of 20201200213321 is 12331200210202.

It can be written as a sum of positive squares in 2 ways, for example, as 10066120471225 + 10135079742096 = 3172715^2 + 3183564^2 .

It is not a de Polignac number, because 20201200213321 - 2¹³ = 20201200205129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20201200213421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178156710 + ... + 178270063.

It is an arithmetic number, because the mean of its divisors is an integer number (1788014911771).

Almost surely, 2^{20201200213321} is an apocalyptic number.

It is an amenable number.

20201200213321 is a deficient number, since it is larger than the sum of its proper divisors (1254978727931).

20201200213321 is a wasteful number, since it uses less digits than its factorization.

20201200213321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356426968 (or 356426949 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20201200213321 its reverse (12331200210202), we get a palindrome (32532400423523).

The spelling of 20201200213321 in words is "twenty trillion, two hundred one billion, two hundred million, two hundred thirteen thousand, three hundred twenty-one".