20212321210131 has 4 divisors (see below), whose sum is σ = 26949761613512. Its totient is φ = 13474880806752.

The previous prime is 20212321210093. The next prime is 20212321210141. The reversal of 20212321210131 is 13101212321202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20212321210131 - 2¹¹ = 20212321208083 is a prime.

It is a super-2 number, since 2×20212321210131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20212321210098 and 20212321210107.

It is not an unprimeable number, because it can be changed into a prime (20212321210141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3368720201686 + ... + 3368720201691.

It is an arithmetic number, because the mean of its divisors is an integer number (6737440403378).

Almost surely, 2^{20212321210131} is an apocalyptic number.

20212321210131 is a deficient number, since it is larger than the sum of its proper divisors (6737440403381).

20212321210131 is an equidigital number, since it uses as much as digits as its factorization.

20212321210131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6737440403380.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20212321210131 its reverse (13101212321202), we get a palindrome (33313533531333).

The spelling of 20212321210131 in words is "twenty trillion, two hundred twelve billion, three hundred twenty-one million, two hundred ten thousand, one hundred thirty-one".