1201111100011 has 4 divisors (see below), whose sum is σ = 1201135577400. Its totient is φ = 1201086622624.

The previous prime is 1201111099999. The next prime is 1201111100017. The reversal of 1201111100011 is 1100011111021.

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 1201111100011 - 2¹³ = 1201111091819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201111100017) 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, 12164941 + ... + 12263278.

It is an arithmetic number, because the mean of its divisors is an integer number (300283894350).

Almost surely, 2^{1201111100011} is an apocalyptic number.

1201111100011 is a deficient number, since it is larger than the sum of its proper divisors (24477389).

1201111100011 is an equidigital number, since it uses as much as digits as its factorization.

1201111100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24477388.

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

Adding to 1201111100011 its reverse (1100011111021), we get a palindrome (2301122211032).

The spelling of 1201111100011 in words is "one trillion, two hundred one billion, one hundred eleven million, one hundred thousand, eleven".