221000002201121 has 16 divisors (see below), whose sum is σ = 260646624499968. Its totient is φ = 184732934246400.

The previous prime is 221000002201103. The next prime is 221000002201151. The reversal of 221000002201121 is 121102200000122.

It is a cyclic number.

It is not a de Polignac number, because 221000002201121 - 2¹⁸ = 221000001938977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221000002201096 and 221000002201105.

It is not an unprimeable number, because it can be changed into a prime (221000002201151) 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, 3006684185 + ... + 3006757686.

It is an arithmetic number, because the mean of its divisors is an integer number (16290414031248).

Almost surely, 2^{221000002201121} is an apocalyptic number.

It is an amenable number.

221000002201121 is a deficient number, since it is larger than the sum of its proper divisors (39646622298847).

221000002201121 is a wasteful number, since it uses less digits than its factorization.

221000002201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013442152.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221000002201121 its reverse (121102200000122), we get a palindrome (342102202201243).

The spelling of 221000002201121 in words is "two hundred twenty-one trillion, two million, two hundred one thousand, one hundred twenty-one".