1221110103222 has 48 divisors (see below), whose sum is σ = 2702349112320. Its totient is φ = 398329425456.

The previous prime is 1221110103217. The next prime is 1221110103229. The reversal of 1221110103222 is 2223010111221.

1221110103222 is a `hidden beast` number, since 1 + 221 + 110 + 10 + 322 + 2 = 666.

It is a super-2 number, since 2×1221110103222² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1221110103195 and 1221110103204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221110103229) 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, 7502179 + ... + 7663217.

It is an arithmetic number, because the mean of its divisors is an integer number (56298939840).

Almost surely, 2^{1221110103222} is an apocalyptic number.

1221110103222 is an abundant number, since it is smaller than the sum of its proper divisors (1481239009098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221110103222 is a wasteful number, since it uses less digits than its factorization.

1221110103222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170057 (or 170054 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1221110103222 its reverse (2223010111221), we get a palindrome (3444120214443).

The spelling of 1221110103222 in words is "one trillion, two hundred twenty-one billion, one hundred ten million, one hundred three thousand, two hundred twenty-two".