2011121197 has 8 divisors (see below), whose sum is σ = 2017764000. Its totient is φ = 2004489840.

The previous prime is 2011121179. The next prime is 2011121201. The reversal of 2011121197 is 7911211102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011121197 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 (2011121107) 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, 467418 + ... + 471700.

It is an arithmetic number, because the mean of its divisors is an integer number (252220500).

Almost surely, 2^2011121197 is an apocalyptic number.

It is an amenable number.

2011121197 is a deficient number, since it is larger than the sum of its proper divisors (6642803).

2011121197 is an equidigital number, since it uses as much as digits as its factorization.

2011121197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723.

The product of its (nonzero) digits is 252, while the sum is 25.

The square root of 2011121197 is about 44845.5259418373. The cubic root of 2011121197 is about 1262.2520396862.

Adding to 2011121197 its reverse (7911211102), we get a palindrome (9922332299).

The spelling of 2011121197 in words is "two billion, eleven million, one hundred twenty-one thousand, one hundred ninety-seven".