1200010012111 has 4 divisors (see below), whose sum is σ = 1200061945512. Its totient is φ = 1199958078712.

The previous prime is 1200010012109. The next prime is 1200010012151. The reversal of 1200010012111 is 1112100100021.

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

It is a cyclic number.

It is not a de Polignac number, because 1200010012111 - 2¹ = 1200010012109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200010012151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25932025 + ... + 25978258.

It is an arithmetic number, because the mean of its divisors is an integer number (300015486378).

Almost surely, 2^{1200010012111} is an apocalyptic number.

1200010012111 is a deficient number, since it is larger than the sum of its proper divisors (51933401).

1200010012111 is an equidigital number, since it uses as much as digits as its factorization.

1200010012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51933400.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1200010012111 its reverse (1112100100021), we get a palindrome (2312110112132).

The spelling of 1200010012111 in words is "one trillion, two hundred billion, ten million, twelve thousand, one hundred eleven".