1320212101231 has 4 divisors (see below), whose sum is σ = 1320246926464. Its totient is φ = 1320177276000.

The previous prime is 1320212101193. The next prime is 1320212101259. The reversal of 1320212101231 is 1321012120231.

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 1320212101231 - 2⁹ = 1320212100719 is a prime.

It is a super-2 number, since 2×1320212101231² (a number of 25 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 = 1320212101199 and 1320212101208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320212101331) 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, 17355690 + ... + 17431591.

It is an arithmetic number, because the mean of its divisors is an integer number (330061731616).

Almost surely, 2^{1320212101231} is an apocalyptic number.

1320212101231 is a deficient number, since it is larger than the sum of its proper divisors (34825233).

1320212101231 is an equidigital number, since it uses as much as digits as its factorization.

1320212101231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34825232.

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

Adding to 1320212101231 its reverse (1321012120231), we get a palindrome (2641224221462).

The spelling of 1320212101231 in words is "one trillion, three hundred twenty billion, two hundred twelve million, one hundred one thousand, two hundred thirty-one".