1201011222011 has 4 divisors (see below), whose sum is σ = 1201190725224. Its totient is φ = 1200831718800.

The previous prime is 1201011221999. The next prime is 1201011222049. The reversal of 1201011222011 is 1102221101021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201011222011 - 2¹⁰ = 1201011220987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201011222211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89741570 + ... + 89754951.

It is an arithmetic number, because the mean of its divisors is an integer number (300297681306).

Almost surely, 2^{1201011222011} is an apocalyptic number.

1201011222011 is a deficient number, since it is larger than the sum of its proper divisors (179503213).

1201011222011 is an equidigital number, since it uses as much as digits as its factorization.

1201011222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179503212.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1201011222011 its reverse (1102221101021), we get a palindrome (2303232323032).

The spelling of 1201011222011 in words is "one trillion, two hundred one billion, eleven million, two hundred twenty-two thousand, eleven".