100001121111 has 24 divisors (see below), whose sum is σ = 148495815104. Its totient is φ = 64801840320.

The previous prime is 100001121107. The next prime is 100001121133. The reversal of 100001121111 is 111121100001.

It is not a de Polignac number, because 100001121111 - 2² = 100001121107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100001121093 and 100001121102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001121191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192930 + ... + 487056.

Almost surely, 2^100001121111 is an apocalyptic number.

100001121111 is a deficient number, since it is larger than the sum of its proper divisors (48494693993).

100001121111 is a wasteful number, since it uses less digits than its factorization.

100001121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295191 (or 295188 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 100001121111 its reverse (111121100001), we get a palindrome (211122221112).

The spelling of 100001121111 in words is "one hundred billion, one million, one hundred twenty-one thousand, one hundred eleven".