1001100222111 has 32 divisors (see below), whose sum is σ = 1480605235200. Its totient is φ = 596543875200.

The previous prime is 1001100222079. The next prime is 1001100222121. The reversal of 1001100222111 is 1112220011001.

It is not a de Polignac number, because 1001100222111 - 2⁵ = 1001100222079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001100222121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5033586 + ... + 5228688.

It is an arithmetic number, because the mean of its divisors is an integer number (46268913600).

Almost surely, 2^{1001100222111} is an apocalyptic number.

1001100222111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1001100222111 is a deficient number, since it is larger than the sum of its proper divisors (479505013089).

1001100222111 is a wasteful number, since it uses less digits than its factorization.

1001100222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197727.

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

Adding to 1001100222111 its reverse (1112220011001), we get a palindrome (2113320233112).

The spelling of 1001100222111 in words is "one trillion, one billion, one hundred million, two hundred twenty-two thousand, one hundred eleven".