1201121120111 has 32 divisors (see below), whose sum is σ = 1384697825280. Its totient is φ = 1031575686400.

The previous prime is 1201121120107. The next prime is 1201121120113. The reversal of 1201121120111 is 1110211211021.

It is a cyclic number.

It is not a de Polignac number, because 1201121120111 - 2² = 1201121120107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201121120113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76171550 + ... + 76187316.

It is an arithmetic number, because the mean of its divisors is an integer number (43271807040).

Almost surely, 2^{1201121120111} is an apocalyptic number.

1201121120111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201121120111 is a deficient number, since it is larger than the sum of its proper divisors (183576705169).

1201121120111 is a wasteful number, since it uses less digits than its factorization.

1201121120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20935.

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

Adding to 1201121120111 its reverse (1110211211021), we get a palindrome (2311332331132).

The spelling of 1201121120111 in words is "one trillion, two hundred one billion, one hundred twenty-one million, one hundred twenty thousand, one hundred eleven".