221220122222101 has 16 divisors (see below), whose sum is σ = 233533100808000. Its totient is φ = 208974138364800.

The previous prime is 221220122222093. The next prime is 221220122222159. The reversal of 221220122222101 is 101222221022122.

221220122222101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221220122222101 - 2³ = 221220122222093 is a prime.

It is a super-2 number, since 2×221220122222101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221220122222201) 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, 1047134841 + ... + 1047346081.

It is an arithmetic number, because the mean of its divisors is an integer number (14595818800500).

Almost surely, 2^{221220122222101} is an apocalyptic number.

It is an amenable number.

221220122222101 is a deficient number, since it is larger than the sum of its proper divisors (12312978585899).

221220122222101 is a wasteful number, since it uses less digits than its factorization.

221220122222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369540.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 221220122222101 its reverse (101222221022122), we get a palindrome (322442343244223).

The spelling of 221220122222101 in words is "two hundred twenty-one trillion, two hundred twenty billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred one".