221111132201121 has 16 divisors (see below), whose sum is σ = 295447822173504. Its totient is φ = 147090935448384.

The previous prime is 221111132201093. The next prime is 221111132201143. The reversal of 221111132201121 is 121102231111122.

It is not a de Polignac number, because 221111132201121 - 2¹¹ = 221111132199073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221111132201221) 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, 334302675 + ... + 334963431.

It is an arithmetic number, because the mean of its divisors is an integer number (18465488885844).

Almost surely, 2^{221111132201121} is an apocalyptic number.

It is an amenable number.

221111132201121 is a deficient number, since it is larger than the sum of its proper divisors (74336689972383).

221111132201121 is a wasteful number, since it uses less digits than its factorization.

221111132201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900080.

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 221111132201121 its reverse (121102231111122), we get a palindrome (342213363312243).

The spelling of 221111132201121 in words is "two hundred twenty-one trillion, one hundred eleven billion, one hundred thirty-two million, two hundred one thousand, one hundred twenty-one".