12210001031 has 4 divisors (see below), whose sum is σ = 12603872064. Its totient is φ = 11816130000.

The previous prime is 12210000991. The next prime is 12210001043. The reversal of 12210001031 is 13010001221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12210001031 is a prime.

It is a super-2 number, since 2×12210001031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210000031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196935470 + ... + 196935531.

It is an arithmetic number, because the mean of its divisors is an integer number (3150968016).

Almost surely, 2^12210001031 is an apocalyptic number.

12210001031 is a deficient number, since it is larger than the sum of its proper divisors (393871033).

12210001031 is an equidigital number, since it uses as much as digits as its factorization.

12210001031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393871032.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 12210001031 its reverse (13010001221), we get a palindrome (25220002252).

The spelling of 12210001031 in words is "twelve billion, two hundred ten million, one thousand, thirty-one".