1122211102221 has 48 divisors (see below), whose sum is σ = 1779117867072. Its totient is φ = 675982291200.

The previous prime is 1122211102171. The next prime is 1122211102223. The reversal of 1122211102221 is 1222011122211.

1122211102221 is a `hidden beast` number, since 112 + 221 + 110 + 2 + 221 = 666.

It is not a de Polignac number, because 1122211102221 - 2¹⁴ = 1122211085837 is a prime.

It is a super-2 number, since 2×1122211102221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1122211102194 and 1122211102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122211102223) 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, 66461446 + ... + 66478328.

It is an arithmetic number, because the mean of its divisors is an integer number (37064955564).

Almost surely, 2^{1122211102221} is an apocalyptic number.

1122211102221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1122211102221 is a deficient number, since it is larger than the sum of its proper divisors (656906764851).

1122211102221 is a wasteful number, since it uses less digits than its factorization.

1122211102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20954 (or 20951 counting only the distinct ones).

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

Adding to 1122211102221 its reverse (1222011122211), we get a palindrome (2344222224432).

The spelling of 1122211102221 in words is "one trillion, one hundred twenty-two billion, two hundred eleven million, one hundred two thousand, two hundred twenty-one".