221201201212001 has 8 divisors (see below), whose sum is σ = 221312202864480. Its totient is φ = 221090201411968.

The previous prime is 221201201211937. The next prime is 221201201212007. The reversal of 221201201212001 is 100212102102122.

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 221201201212001 - 2⁶ = 221201201211937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221201201212007) 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, 281313770 + ... + 282098988.

It is an arithmetic number, because the mean of its divisors is an integer number (27664025358060).

Almost surely, 2^{221201201212001} is an apocalyptic number.

It is an amenable number.

221201201212001 is a deficient number, since it is larger than the sum of its proper divisors (111001652479).

221201201212001 is a wasteful number, since it uses less digits than its factorization.

221201201212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926223.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221201201212001 its reverse (100212102102122), we get a palindrome (321413303314123).

The spelling of 221201201212001 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred one million, two hundred twelve thousand, one".