12121120222021 has 8 divisors (see below), whose sum is σ = 12129594301440. Its totient is φ = 12112647945168.

The previous prime is 12121120221979. The next prime is 12121120222109. The reversal of 12121120222021 is 12022202112121.

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 12121120222021 - 2²⁹ = 12120583351109 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 12121120222021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121120229021) 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, 13145895 + ... + 14037691.

It is an arithmetic number, because the mean of its divisors is an integer number (1516199287680).

Almost surely, 2^{12121120222021} is an apocalyptic number.

It is an amenable number.

12121120222021 is a deficient number, since it is larger than the sum of its proper divisors (8474079419).

12121120222021 is an equidigital number, since it uses as much as digits as its factorization.

12121120222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901283.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12121120222021 its reverse (12022202112121), we get a palindrome (24143322334142).

The spelling of 12121120222021 in words is "twelve trillion, one hundred twenty-one billion, one hundred twenty million, two hundred twenty-two thousand, twenty-one".