1123211011211 has 8 divisors (see below), whose sum is σ = 1172063827104. Its totient is φ = 1074359658240.

The previous prime is 1123211011207. The next prime is 1123211011243. The reversal of 1123211011211 is 1121101123211.

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

It is a cyclic number.

It is not a de Polignac number, because 1123211011211 - 2² = 1123211011207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123211011211.

It is not an unprimeable number, because it can be changed into a prime (1123211031211) 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, 1380731 + ... + 2037851.

It is an arithmetic number, because the mean of its divisors is an integer number (146507978388).

Almost surely, 2^{1123211011211} is an apocalyptic number.

1123211011211 is a deficient number, since it is larger than the sum of its proper divisors (48852815893).

1123211011211 is an equidigital number, since it uses as much as digits as its factorization.

1123211011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731461.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 1123211011211 its reverse (1121101123211), we get a palindrome (2244312134422).

The spelling of 1123211011211 in words is "one trillion, one hundred twenty-three billion, two hundred eleven million, eleven thousand, two hundred eleven".