1201011211011 has 16 divisors (see below), whose sum is σ = 1717434109440. Its totient is φ = 744221443680.

The previous prime is 1201011211007. The next prime is 1201011211031. The reversal of 1201011211011 is 1101121101021.

It is not a de Polignac number, because 1201011211011 - 2² = 1201011211007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201011211031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198774075 + ... + 198780116.

It is an arithmetic number, because the mean of its divisors is an integer number (107339631840).

Almost surely, 2^{1201011211011} is an apocalyptic number.

1201011211011 is a deficient number, since it is larger than the sum of its proper divisors (516422898429).

1201011211011 is a wasteful number, since it uses less digits than its factorization.

1201011211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397554266.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1201011211011 its reverse (1101121101021), we get a palindrome (2302132312032).

The spelling of 1201011211011 in words is "one trillion, two hundred one billion, eleven million, two hundred eleven thousand, eleven".