1011200010111 has 12 divisors (see below), whose sum is σ = 1500098513992. Its totient is φ = 655913519856.

The previous prime is 1011200010103. The next prime is 1011200010131. The reversal of 1011200010111 is 1110100021101.

It is not a de Polignac number, because 1011200010111 - 2³ = 1011200010103 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 = 1011200010093 and 1011200010102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011200010131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1518318001 + ... + 1518318666.

Almost surely, 2^{1011200010111} is an apocalyptic number.

1011200010111 is a deficient number, since it is larger than the sum of its proper divisors (488898503881).

1011200010111 is a wasteful number, since it uses less digits than its factorization.

1011200010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036636710 (or 3036636707 counting only the distinct ones).

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

Adding to 1011200010111 its reverse (1110100021101), we get a palindrome (2121300031212).

The spelling of 1011200010111 in words is "one trillion, eleven billion, two hundred million, ten thousand, one hundred eleven".