1102212112221 has 20 divisors (see below), whose sum is σ = 1796197517664. Its totient is φ = 668007340200.

The previous prime is 1102212112193. The next prime is 1102212112349. The reversal of 1102212112221 is 1222112122011.

1102212112221 is a `hidden beast` number, since 1 + 10 + 221 + 211 + 2 + 221 = 666.

It is not a de Polignac number, because 1102212112221 - 2⁹ = 1102212111709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1102212112194 and 1102212112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102212112021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 618524425 + ... + 618526206.

Almost surely, 2^{1102212112221} is an apocalyptic number.

1102212112221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1102212112221 is a deficient number, since it is larger than the sum of its proper divisors (693985405443).

1102212112221 is a wasteful number, since it uses less digits than its factorization.

1102212112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237050654 (or 1237050645 counting only the distinct ones).

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

Adding to 1102212112221 its reverse (1222112122011), we get a palindrome (2324324234232).

The spelling of 1102212112221 in words is "one trillion, one hundred two billion, two hundred twelve million, one hundred twelve thousand, two hundred twenty-one".