1102111222221 has 48 divisors (see below), whose sum is σ = 1718966995200. Its totient is φ = 678350889216.

The previous prime is 1102111222217. The next prime is 1102111222253. The reversal of 1102111222221 is 1222221112011.

1102111222221 is a `hidden beast` number, since 1 + 10 + 211 + 1 + 222 + 221 = 666.

It is not a de Polignac number, because 1102111222221 - 2² = 1102111222217 is a prime.

It is a super-2 number, since 2×1102111222221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1102111222194 and 1102111222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102111222271) 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 47 ways as a sum of consecutive naturals, for example, 20581560 + ... + 20635038.

It is an arithmetic number, because the mean of its divisors is an integer number (35811812400).

Almost surely, 2^{1102111222221} is an apocalyptic number.

It is an amenable number.

1102111222221 is a deficient number, since it is larger than the sum of its proper divisors (616855772979).

1102111222221 is a wasteful number, since it uses less digits than its factorization.

1102111222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56970 (or 56967 counting only the distinct ones).

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

Adding to 1102111222221 its reverse (1222221112011), we get a palindrome (2324332334232).

The spelling of 1102111222221 in words is "one trillion, one hundred two billion, one hundred eleven million, two hundred twenty-two thousand, two hundred twenty-one".