1000201111 has 16 divisors (see below), whose sum is σ = 1237287744. Its totient is φ = 787336704.

The previous prime is 1000201063. The next prime is 1000201123. The reversal of 1000201111 is 1111020001.

It is a de Polignac number, because none of the positive numbers 2^k-1000201111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 1000201094 and 1000201103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000201151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9970 + ... + 45823.

It is an arithmetic number, because the mean of its divisors is an integer number (77330484).

Almost surely, 2^1000201111 is an apocalyptic number.

1000201111 is a deficient number, since it is larger than the sum of its proper divisors (237086633).

1000201111 is a wasteful number, since it uses less digits than its factorization.

1000201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56010.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1000201111 is about 31625.9562859370. The cubic root of 1000201111 is about 1000.0670325065.

Adding to 1000201111 its reverse (1111020001), we get a palindrome (2111221112).

The spelling of 1000201111 in words is "one billion, two hundred one thousand, one hundred eleven".