1201011221211 has 8 divisors (see below), whose sum is σ = 1601356384320. Its totient is φ = 800670102792.

The previous prime is 1201011221203. The next prime is 1201011221227. The reversal of 1201011221211 is 1121221101021.

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 1201011221211 - 2³ = 1201011221203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201011221261) 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, 232705 + ... + 1567218.

It is an arithmetic number, because the mean of its divisors is an integer number (200169548040).

Almost surely, 2^{1201011221211} is an apocalyptic number.

1201011221211 is a deficient number, since it is larger than the sum of its proper divisors (400345163109).

1201011221211 is a wasteful number, since it uses less digits than its factorization.

1201011221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022345.

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

Adding to 1201011221211 its reverse (1121221101021), we get a palindrome (2322232322232).

The spelling of 1201011221211 in words is "one trillion, two hundred one billion, eleven million, two hundred twenty-one thousand, two hundred eleven".