12120101213 has 4 divisors (see below), whose sum is σ = 13221928608. Its totient is φ = 11018273820.

The previous prime is 12120101179. The next prime is 12120101249. The reversal of 12120101213 is 31210102121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31210102121 = 11 ⋅2837282011.

It is a cyclic number.

It is not a de Polignac number, because 12120101213 - 2⁸ = 12120100957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120101263) 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, 550913681 + ... + 550913702.

It is an arithmetic number, because the mean of its divisors is an integer number (3305482152).

Almost surely, 2^12120101213 is an apocalyptic number.

It is an amenable number.

12120101213 is a deficient number, since it is larger than the sum of its proper divisors (1101827395).

12120101213 is a wasteful number, since it uses less digits than its factorization.

12120101213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101827394.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12120101213 its reverse (31210102121), we get a palindrome (43330203334).

The spelling of 12120101213 in words is "twelve billion, one hundred twenty million, one hundred one thousand, two hundred thirteen".