1201122111 has 8 divisors (see below), whose sum is σ = 1830281344. Its totient is φ = 686355480.

The previous prime is 1201122089. The next prime is 1201122211. The reversal of 1201122111 is 1112211021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1201122111 - 2⁵ = 1201122079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201122211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28598125 + ... + 28598166.

It is an arithmetic number, because the mean of its divisors is an integer number (228785168).

Almost surely, 2^1201122111 is an apocalyptic number.

1201122111 is a deficient number, since it is larger than the sum of its proper divisors (629159233).

1201122111 is an equidigital number, since it uses as much as digits as its factorization.

1201122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57196301.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1201122111 is about 34657.2086440902. The cubic root of 1201122111 is about 1062.9896940126.

Adding to 1201122111 its reverse (1112211021), we get a palindrome (2313333132).

The spelling of 1201122111 in words is "one billion, two hundred one million, one hundred twenty-two thousand, one hundred eleven".