1001021111222 has 8 divisors (see below), whose sum is σ = 1638034545672. Its totient is φ = 455009596000.

The previous prime is 1001021111221. The next prime is 1001021111227. The reversal of 1001021111222 is 2221111201001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1001021111222² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001021111197 and 1001021111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001021111221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22750479779 + ... + 22750479822.

It is an arithmetic number, because the mean of its divisors is an integer number (204754318209).

Almost surely, 2^{1001021111222} is an apocalyptic number.

1001021111222 is a deficient number, since it is larger than the sum of its proper divisors (637013434450).

1001021111222 is a wasteful number, since it uses less digits than its factorization.

1001021111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45500959614.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1001021111222 its reverse (2221111201001), we get a palindrome (3222132312223).

The spelling of 1001021111222 in words is "one trillion, one billion, twenty-one million, one hundred eleven thousand, two hundred twenty-two".