1001222110021 has 8 divisors (see below), whose sum is σ = 1144361741184. Its totient is φ = 858109454160.

The previous prime is 1001222110019. The next prime is 1001222110027. The reversal of 1001222110021 is 1200112221001.

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

It is not a de Polignac number, because 1001222110021 - 2¹ = 1001222110019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001222109983 and 1001222110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001222110027) 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, 6664225 + ... + 6812806.

It is an arithmetic number, because the mean of its divisors is an integer number (143045217648).

Almost surely, 2^{1001222110021} is an apocalyptic number.

It is an amenable number.

1001222110021 is a deficient number, since it is larger than the sum of its proper divisors (143139631163).

1001222110021 is a wasteful number, since it uses less digits than its factorization.

1001222110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13487651.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1001222110021 its reverse (1200112221001), we get a palindrome (2201334331022).

The spelling of 1001222110021 in words is "one trillion, one billion, two hundred twenty-two million, one hundred ten thousand, twenty-one".