221201121201 has 8 divisors (see below), whose sum is σ = 305104994880. Its totient is φ = 142382330832.

The previous prime is 221201121199. The next prime is 221201121257. The reversal of 221201121201 is 102121102122.

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

It is not a de Polignac number, because 221201121201 - 2¹ = 221201121199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221201171201) 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, 1271270725 + ... + 1271270898.

It is an arithmetic number, because the mean of its divisors is an integer number (38138124360).

Almost surely, 2^221201121201 is an apocalyptic number.

It is an amenable number.

221201121201 is a deficient number, since it is larger than the sum of its proper divisors (83903873679).

221201121201 is a wasteful number, since it uses less digits than its factorization.

221201121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542541655.

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

Adding to 221201121201 its reverse (102121102122), we get a palindrome (323322223323).

The spelling of 221201121201 in words is "two hundred twenty-one billion, two hundred one million, one hundred twenty-one thousand, two hundred one".