1201002011111 has 8 divisors (see below), whose sum is σ = 1376987149824. Its totient is φ = 1026120228120.

The previous prime is 1201002011101. The next prime is 1201002011149. The reversal of 1201002011111 is 1111102001021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201002011111 - 2⁶ = 1201002011047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201002011092 and 1201002011101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201002011101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275836595 + ... + 275840948.

It is an arithmetic number, because the mean of its divisors is an integer number (172123393728).

Almost surely, 2^{1201002011111} is an apocalyptic number.

1201002011111 is a deficient number, since it is larger than the sum of its proper divisors (175985138713).

1201002011111 is an equidigital number, since it uses as much as digits as its factorization.

1201002011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551677861.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1201002011111 its reverse (1111102001021), we get a palindrome (2312104012132).

The spelling of 1201002011111 in words is "one trillion, two hundred one billion, two million, eleven thousand, one hundred eleven".