1222002020121 has 8 divisors (see below), whose sum is σ = 1629343253184. Its totient is φ = 814664400240.

The previous prime is 1222002020119. The next prime is 1222002020147. The reversal of 1222002020121 is 1210202002221.

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

It is not a de Polignac number, because 1222002020121 - 2¹ = 1222002020119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222002020121.

It is not an unprimeable number, because it can be changed into a prime (1222002020221) 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, 20955 + ... + 1563471.

It is an arithmetic number, because the mean of its divisors is an integer number (203667906648).

Almost surely, 2^{1222002020121} is an apocalyptic number.

It is an amenable number.

1222002020121 is a deficient number, since it is larger than the sum of its proper divisors (407341233063).

1222002020121 is a wasteful number, since it uses less digits than its factorization.

1222002020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806591.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1222002020121 its reverse (1210202002221), we get a palindrome (2432204022342).

The spelling of 1222002020121 in words is "one trillion, two hundred twenty-two billion, two million, twenty thousand, one hundred twenty-one".