12120221121101 has 16 divisors (see below), whose sum is σ = 12331010764800. Its totient is φ = 11910317303808.

The previous prime is 12120221121089. The next prime is 12120221121131. The reversal of 12120221121101 is 10112112202121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120221121101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12120221121101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120221121131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305436980 + ... + 305476658.

It is an arithmetic number, because the mean of its divisors is an integer number (770688172800).

Almost surely, 2^{12120221121101} is an apocalyptic number.

It is an amenable number.

12120221121101 is a deficient number, since it is larger than the sum of its proper divisors (210789643699).

12120221121101 is a wasteful number, since it uses less digits than its factorization.

12120221121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50708.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12120221121101 its reverse (10112112202121), we get a palindrome (22232333323222).

The spelling of 12120221121101 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred one".