12212120031 has 8 divisors (see below), whose sum is σ = 16321504944. Its totient is φ = 8122074240.

The previous prime is 12212120003. The next prime is 12212120033. The reversal of 12212120031 is 13002121221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12212120031 - 2⁹ = 12212119519 is a prime.

It is a super-2 number, since 2×12212120031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212120033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4833306 + ... + 4835831.

It is an arithmetic number, because the mean of its divisors is an integer number (2040188118).

Almost surely, 2^12212120031 is an apocalyptic number.

12212120031 is a deficient number, since it is larger than the sum of its proper divisors (4109384913).

12212120031 is an equidigital number, since it uses as much as digits as its factorization.

12212120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9669561.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12212120031 its reverse (13002121221), we get a palindrome (25214241252).

The spelling of 12212120031 in words is "twelve billion, two hundred twelve million, one hundred twenty thousand, thirty-one".