1201112100001 has 12 divisors (see below), whose sum is σ = 1338825462912. Its totient is φ = 1076540927000.

The previous prime is 1201112099983. The next prime is 1201112100011. The reversal of 1201112100001 is 1000012111021.

It is not a de Polignac number, because 1201112100001 - 2⁵ = 1201112099969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201112100011) 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, 69896665 + ... + 69913846.

It is an arithmetic number, because the mean of its divisors is an integer number (111568788576).

Almost surely, 2^{1201112100001} is an apocalyptic number.

1201112100001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201112100001 is a deficient number, since it is larger than the sum of its proper divisors (137713362911).

1201112100001 is a wasteful number, since it uses less digits than its factorization.

1201112100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139810604 (or 139810593 counting only the distinct ones).

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

Adding to 1201112100001 its reverse (1000012111021), we get a palindrome (2201124211022).

The spelling of 1201112100001 in words is "one trillion, two hundred one billion, one hundred twelve million, one hundred thousand, one".