1001222221101 has 8 divisors (see below), whose sum is σ = 1335870488064. Its totient is φ = 667027717440.

The previous prime is 1001222221099. The next prime is 1001222221117. The reversal of 1001222221101 is 1011222221001.

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

It is not a de Polignac number, because 1001222221101 - 2¹ = 1001222221099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001222221151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113435676 + ... + 113444501.

It is an arithmetic number, because the mean of its divisors is an integer number (166983811008).

Almost surely, 2^{1001222221101} is an apocalyptic number.

It is an amenable number.

1001222221101 is a deficient number, since it is larger than the sum of its proper divisors (334648266963).

1001222221101 is a wasteful number, since it uses less digits than its factorization.

1001222221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226881651.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1001222221101 its reverse (1011222221001), we get a palindrome (2012444442102).

The spelling of 1001222221101 in words is "one trillion, one billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred one".