1201011111011 has 8 divisors (see below), whose sum is σ = 1202013137664. Its totient is φ = 1200009210120.

The previous prime is 1201011110983. The next prime is 1201011111023. The reversal of 1201011111011 is 1101111101021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1201011111011 - 2¹⁴ = 1201011094627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201011110983 and 1201011111001.

It is not an unprimeable number, because it can be changed into a prime (1201011111031) 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, 33426146 + ... + 33462056.

It is an arithmetic number, because the mean of its divisors is an integer number (150251642208).

Almost surely, 2^{1201011111011} is an apocalyptic number.

1201011111011 is a deficient number, since it is larger than the sum of its proper divisors (1002026653).

1201011111011 is a wasteful number, since it uses less digits than its factorization.

1201011111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62881.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1201011111011 its reverse (1101111101021), we get a palindrome (2302122212032).

The spelling of 1201011111011 in words is "one trillion, two hundred one billion, eleven million, one hundred eleven thousand, eleven".