212321120131 has 4 divisors (see below), whose sum is σ = 212430962272. Its totient is φ = 212211277992.

The previous prime is 212321120129. The next prime is 212321120191. The reversal of 212321120131 is 131021123212.

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

It is a cyclic number.

It is not a de Polignac number, because 212321120131 - 2¹ = 212321120129 is a prime.

It is a super-2 number, since 2×212321120131² (a number of 23 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 = 212321120099 and 212321120108.

It is not an unprimeable number, because it can be changed into a prime (212321120191) 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, 54918171 + ... + 54922036.

It is an arithmetic number, because the mean of its divisors is an integer number (53107740568).

Almost surely, 2^212321120131 is an apocalyptic number.

212321120131 is a deficient number, since it is larger than the sum of its proper divisors (109842141).

212321120131 is a wasteful number, since it uses less digits than its factorization.

212321120131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109842140.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212321120131 its reverse (131021123212), we get a palindrome (343342243343).

The spelling of 212321120131 in words is "two hundred twelve billion, three hundred twenty-one million, one hundred twenty thousand, one hundred thirty-one".