22221112100121 has 24 divisors (see below), whose sum is σ = 35067114197856. Its totient is φ = 13447329719040.

The previous prime is 22221112100119. The next prime is 22221112100149. The reversal of 22221112100121 is 12100121112222.

22221112100121 is a `hidden beast` number, since 2 + 222 + 111 + 210 + 0 + 121 = 666.

It is not a de Polignac number, because 22221112100121 - 2¹ = 22221112100119 is a prime.

It is a super-2 number, since 2×22221112100121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22221112100094 and 22221112100103.

It is not an unprimeable number, because it can be changed into a prime (22221112000121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166690935 + ... + 166824188.

It is an arithmetic number, because the mean of its divisors is an integer number (1461129758244).

Almost surely, 2^{22221112100121} is an apocalyptic number.

It is an amenable number.

22221112100121 is a deficient number, since it is larger than the sum of its proper divisors (12846002097735).

22221112100121 is a wasteful number, since it uses less digits than its factorization.

22221112100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333515813 (or 333515810 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22221112100121 its reverse (12100121112222), we get a palindrome (34321233212343).

The spelling of 22221112100121 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twelve million, one hundred thousand, one hundred twenty-one".