1211120111201 has 64 divisors (see below), whose sum is σ = 1650978201600. Its totient is φ = 857875449600.

The previous prime is 1211120111191. The next prime is 1211120111203. The reversal of 1211120111201 is 1021110211121.

It is not a de Polignac number, because 1211120111201 - 2¹⁰ = 1211120110177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211120111203) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30742046 + ... + 30781416.

It is an arithmetic number, because the mean of its divisors is an integer number (25796534400).

Almost surely, 2^{1211120111201} is an apocalyptic number.

1211120111201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1211120111201 is a deficient number, since it is larger than the sum of its proper divisors (439858090399).

1211120111201 is a wasteful number, since it uses less digits than its factorization.

1211120111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39870.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1211120111201 its reverse (1021110211121), we get a palindrome (2232230322322).

The spelling of 1211120111201 in words is "one trillion, two hundred eleven billion, one hundred twenty million, one hundred eleven thousand, two hundred one".