1201120210111 has 4 divisors (see below), whose sum is σ = 1201467659392. Its totient is φ = 1200772760832.

The previous prime is 1201120210049. The next prime is 1201120210123. The reversal of 1201120210111 is 1110120211021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201120210111 - 2²¹ = 1201118112959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201120210091 and 1201120210100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201120210151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173719455 + ... + 173726368.

It is an arithmetic number, because the mean of its divisors is an integer number (300366914848).

Almost surely, 2^{1201120210111} is an apocalyptic number.

1201120210111 is a deficient number, since it is larger than the sum of its proper divisors (347449281).

1201120210111 is an equidigital number, since it uses as much as digits as its factorization.

1201120210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347449280.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1201120210111 its reverse (1110120211021), we get a palindrome (2311240421132).

The spelling of 1201120210111 in words is "one trillion, two hundred one billion, one hundred twenty million, two hundred ten thousand, one hundred eleven".