221022220210121 has 16 divisors (see below), whose sum is σ = 243371829476160. Its totient is φ = 199050521349120.

The previous prime is 221022220210117. The next prime is 221022220210157. The reversal of 221022220210121 is 121012022220122.

It is a cyclic number.

It is not a de Polignac number, because 221022220210121 - 2² = 221022220210117 is a prime.

It is a super-2 number, since 2×221022220210121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221022220210093 and 221022220210102.

It is not an unprimeable number, because it can be changed into a prime (221022220110121) 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, 42465200 + ... + 47384993.

It is an arithmetic number, because the mean of its divisors is an integer number (15210739342260).

Almost surely, 2^{221022220210121} is an apocalyptic number.

It is an amenable number.

221022220210121 is a deficient number, since it is larger than the sum of its proper divisors (22349609266039).

221022220210121 is a wasteful number, since it uses less digits than its factorization.

221022220210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89852296.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221022220210121 its reverse (121012022220122), we get a palindrome (342034242430243).

The spelling of 221022220210121 in words is "two hundred twenty-one trillion, twenty-two billion, two hundred twenty million, two hundred ten thousand, one hundred twenty-one".