12120320221021 has 8 divisors (see below), whose sum is σ = 12199173364160. Its totient is φ = 12041521899552.

The previous prime is 12120320220979. The next prime is 12120320221091. The reversal of 12120320221021 is 12012202302121.

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

It is a cyclic number.

It is not a de Polignac number, because 12120320221021 - 2¹⁷ = 12120320089949 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 12120320221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120320221091) 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, 13261761 + ... + 14146198.

It is an arithmetic number, because the mean of its divisors is an integer number (1524896670520).

Almost surely, 2^{12120320221021} is an apocalyptic number.

It is an amenable number.

12120320221021 is a deficient number, since it is larger than the sum of its proper divisors (78853143139).

12120320221021 is a wasteful number, since it uses less digits than its factorization.

12120320221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27410835.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12120320221021 its reverse (12012202302121), we get a palindrome (24132522523142).

The spelling of 12120320221021 in words is "twelve trillion, one hundred twenty billion, three hundred twenty million, two hundred twenty-one thousand, twenty-one".