212321131113031 has 4 divisors (see below), whose sum is σ = 212321271362200. Its totient is φ = 212320990863864.

The previous prime is 212321131113029. The next prime is 212321131113041. The reversal of 212321131113031 is 130311131123212.

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 212321131113031 - 2¹ = 212321131113029 is a prime.

It is a super-2 number, since 2×212321131113031² (a number of 29 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 = 212321131112987 and 212321131113005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212321131113041) 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 3 ways as a sum of consecutive naturals, for example, 67828701 + ... + 70889878.

It is an arithmetic number, because the mean of its divisors is an integer number (53080317840550).

Almost surely, 2^{212321131113031} is an apocalyptic number.

212321131113031 is a deficient number, since it is larger than the sum of its proper divisors (140249169).

212321131113031 is a wasteful number, since it uses less digits than its factorization.

212321131113031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140249168.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 212321131113031 its reverse (130311131123212), we get a palindrome (342632262236243).

The spelling of 212321131113031 in words is "two hundred twelve trillion, three hundred twenty-one billion, one hundred thirty-one million, one hundred thirteen thousand, thirty-one".