1201011122211 has 8 divisors (see below), whose sum is σ = 1604691271680. Its totient is φ = 799002527112.

The previous prime is 1201011122203. The next prime is 1201011122231. The reversal of 1201011122211 is 1122211101021.

It is a happy number.

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

It is not a de Polignac number, because 1201011122211 - 2³ = 1201011122203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201011122231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417886915 + ... + 417889788.

It is an arithmetic number, because the mean of its divisors is an integer number (200586408960).

Almost surely, 2^{1201011122211} is an apocalyptic number.

1201011122211 is a deficient number, since it is larger than the sum of its proper divisors (403680149469).

1201011122211 is an equidigital number, since it uses as much as digits as its factorization.

1201011122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835777185.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1201011122211 its reverse (1122211101021), we get a palindrome (2323222223232).

The spelling of 1201011122211 in words is "one trillion, two hundred one billion, eleven million, one hundred twenty-two thousand, two hundred eleven".