1200111211101 has 16 divisors (see below), whose sum is σ = 1745682649920. Its totient is φ = 727312485120.

The previous prime is 1200111211099. The next prime is 1200111211111. The reversal of 1200111211101 is 1011121110021.

It is not a de Polignac number, because 1200111211101 - 2¹ = 1200111211099 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200111211111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207835 + ... + 1563143.

It is an arithmetic number, because the mean of its divisors is an integer number (109105165620).

Almost surely, 2^{1200111211101} is an apocalyptic number.

1200111211101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200111211101 is a deficient number, since it is larger than the sum of its proper divisors (545571438819).

1200111211101 is a wasteful number, since it uses less digits than its factorization.

1200111211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382156.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1200111211101 its reverse (1011121110021), we get a palindrome (2211232321122).

The spelling of 1200111211101 in words is "one trillion, two hundred billion, one hundred eleven million, two hundred eleven thousand, one hundred one".