12101221113 has 4 divisors (see below), whose sum is σ = 16134961488. Its totient is φ = 8067480740.

The previous prime is 12101221103. The next prime is 12101221117. The reversal of 12101221113 is 31112210121.

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: 31112210121 = 3 ⋅10370736707.

It is a cyclic number.

It is not a de Polignac number, because 12101221113 - 2¹² = 12101217017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12101221092 and 12101221101.

It is not an unprimeable number, because it can be changed into a prime (12101221117) 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, 2016870183 + ... + 2016870188.

It is an arithmetic number, because the mean of its divisors is an integer number (4033740372).

Almost surely, 2^12101221113 is an apocalyptic number.

It is an amenable number.

12101221113 is a deficient number, since it is larger than the sum of its proper divisors (4033740375).

12101221113 is an equidigital number, since it uses as much as digits as its factorization.

12101221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033740374.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12101221113 its reverse (31112210121), we get a palindrome (43213431234).

The spelling of 12101221113 in words is "twelve billion, one hundred one million, two hundred twenty-one thousand, one hundred thirteen".