12221121020001 has 8 divisors (see below), whose sum is σ = 16295046968064. Its totient is φ = 8147304542640.

The previous prime is 12221121019997. The next prime is 12221121020179. The reversal of 12221121020001 is 10002012112221.

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

It is not a de Polignac number, because 12221121020001 - 2² = 12221121019997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12221121010001) 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, 27106830 + ... + 27553991.

It is an arithmetic number, because the mean of its divisors is an integer number (2036880871008).

Almost surely, 2^{12221121020001} is an apocalyptic number.

It is an amenable number.

12221121020001 is a deficient number, since it is larger than the sum of its proper divisors (4073925948063).

12221121020001 is an equidigital number, since it uses as much as digits as its factorization.

12221121020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54735351.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12221121020001 its reverse (10002012112221), we get a palindrome (22223133132222).

The spelling of 12221121020001 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-one million, twenty thousand, one".