22112112100221 has 48 divisors (see below), whose sum is σ = 38777285968960. Its totient is φ = 12370412340000.

The previous prime is 22112112100217. The next prime is 22112112100231. The reversal of 22112112100221 is 12200121121122.

22112112100221 is a `hidden beast` number, since 2 + 21 + 1 + 211 + 210 + 0 + 221 = 666.

It is not a de Polignac number, because 22112112100221 - 2² = 22112112100217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22112112100194 and 22112112100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112112100231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 260277655 + ... + 260362596.

Almost surely, 2^{22112112100221} is an apocalyptic number.

It is an amenable number.

22112112100221 is a deficient number, since it is larger than the sum of its proper divisors (16665173868739).

22112112100221 is a wasteful number, since it uses less digits than its factorization.

22112112100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520640295 (or 520640278 counting only the distinct ones).

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

Adding to 22112112100221 its reverse (12200121121122), we get a palindrome (34312233221343).

The spelling of 22112112100221 in words is "twenty-two trillion, one hundred twelve billion, one hundred twelve million, one hundred thousand, two hundred twenty-one".