1000201111111 has 4 divisors (see below), whose sum is σ = 1000254222000. Its totient is φ = 1000148000224.

The previous prime is 1000201111061. The next prime is 1000201111127. The reversal of 1000201111111 is 1111111020001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000201111111 is a prime.

It is a Duffinian number.

1000201111111 is a modest number, since divided by 1111111 gives 100020 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000201111141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26527186 + ... + 26564863.

It is an arithmetic number, because the mean of its divisors is an integer number (250063555500).

Almost surely, 2^{1000201111111} is an apocalyptic number.

1000201111111 is a deficient number, since it is larger than the sum of its proper divisors (53110889).

1000201111111 is an equidigital number, since it uses as much as digits as its factorization.

1000201111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53110888.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1000201111111 its reverse (1111111020001), we get a palindrome (2111312131112).

The spelling of 1000201111111 in words is "one trillion, two hundred one million, one hundred eleven thousand, one hundred eleven".