220121223112001 has 16 divisors (see below), whose sum is σ = 230337607737600. Its totient is φ = 210177249587088.

The previous prime is 220121223111997. The next prime is 220121223112057. The reversal of 220121223112001 is 100211322121022.

220121223112001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 220121223112001 - 2² = 220121223111997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220121223112061) 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, 241904471 + ... + 242812716.

It is an arithmetic number, because the mean of its divisors is an integer number (14396100483600).

Almost surely, 2^{220121223112001} is an apocalyptic number.

It is an amenable number.

220121223112001 is a deficient number, since it is larger than the sum of its proper divisors (10216384625599).

220121223112001 is a wasteful number, since it uses less digits than its factorization.

220121223112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484717468.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 220121223112001 its reverse (100211322121022), we get a palindrome (320332545233023).

The spelling of 220121223112001 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred twenty-three million, one hundred twelve thousand, one".