1001220012111 has 8 divisors (see below), whose sum is σ = 1456320017664. Its totient is φ = 606800007320.

The previous prime is 1001220012049. The next prime is 1001220012181. The reversal of 1001220012111 is 1112100221001.

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

It is a cyclic number.

It is not a de Polignac number, because 1001220012111 - 2⁶ = 1001220012047 is a prime.

It is a super-3 number, since 3×1001220012111³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001220012181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15170000151 + ... + 15170000216.

It is an arithmetic number, because the mean of its divisors is an integer number (182040002208).

Almost surely, 2^{1001220012111} is an apocalyptic number.

1001220012111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1001220012111 is a deficient number, since it is larger than the sum of its proper divisors (455100005553).

1001220012111 is a wasteful number, since it uses less digits than its factorization.

1001220012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30340000381.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1001220012111 its reverse (1112100221001), we get a palindrome (2113320233112).

The spelling of 1001220012111 in words is "one trillion, one billion, two hundred twenty million, twelve thousand, one hundred eleven".