1201011100011 has 10 divisors (see below), whose sum is σ = 1794103001372. Its totient is φ = 800674066620.

The previous prime is 1201011100007. The next prime is 1201011100043. The reversal of 1201011100011 is 1100011101021.

It is not a de Polignac number, because 1201011100011 - 2² = 1201011100007 is a prime.

It is a super-4 number, since 4×1201011100011⁴ (a number of 49 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201011099966 and 1201011100002.

It is not an unprimeable number, because it can be changed into a prime (1201011100061) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7413648685 + ... + 7413648846.

Almost surely, 2^{1201011100011} is an apocalyptic number.

1201011100011 is a deficient number, since it is larger than the sum of its proper divisors (593091901361).

1201011100011 is an equidigital number, since it uses as much as digits as its factorization.

1201011100011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14827297543 (or 14827297534 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1201011100011 its reverse (1100011101021), we get a palindrome (2301022201032).

The spelling of 1201011100011 in words is "one trillion, two hundred one billion, eleven million, one hundred thousand, eleven".