1201002100111 has 6 divisors (see below), whose sum is σ = 1320109746536. Its totient is φ = 1091820090900.

The previous prime is 1201002100073. The next prime is 1201002100187. The reversal of 1201002100111 is 1110012001021.

It is not a de Polignac number, because 1201002100111 - 2²³ = 1200993711503 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 (1201002100811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4962818475 + ... + 4962818716.

Almost surely, 2^{1201002100111} is an apocalyptic number.

1201002100111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201002100111 is a deficient number, since it is larger than the sum of its proper divisors (119107646425).

1201002100111 is an equidigital number, since it uses as much as digits as its factorization.

1201002100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9925637213 (or 9925637202 counting only the distinct ones).

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

Adding to 1201002100111 its reverse (1110012001021), we get a palindrome (2311014101132).

The spelling of 1201002100111 in words is "one trillion, two hundred one billion, two million, one hundred thousand, one hundred eleven".