1001222123222 has 4 divisors (see below), whose sum is σ = 1501833184836. Its totient is φ = 500611061610.

The previous prime is 1001222123207. The next prime is 1001222123227. The reversal of 1001222123222 is 2223212221001.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1001222123222² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001222123194 and 1001222123203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001222123227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250305530804 + ... + 250305530807.

It is an arithmetic number, because the mean of its divisors is an integer number (375458296209).

Almost surely, 2^{1001222123222} is an apocalyptic number.

1001222123222 is a deficient number, since it is larger than the sum of its proper divisors (500611061614).

1001222123222 is an equidigital number, since it uses as much as digits as its factorization.

1001222123222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500611061613.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1001222123222 its reverse (2223212221001), we get a palindrome (3224434344223).

The spelling of 1001222123222 in words is "one trillion, one billion, two hundred twenty-two million, one hundred twenty-three thousand, two hundred twenty-two".