1201100011 has 4 divisors (see below), whose sum is σ = 1201216912. Its totient is φ = 1200983112.

The previous prime is 1201099981. The next prime is 1201100023. The reversal of 1201100011 is 1100011021.

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 1201100011 - 2¹⁹ = 1200575723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201099967 and 1201100003.

It is not an unprimeable number, because it can be changed into a prime (1201100041) 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, 41376 + ... + 64141.

It is an arithmetic number, because the mean of its divisors is an integer number (300304228).

Almost surely, 2^1201100011 is an apocalyptic number.

1201100011 is a deficient number, since it is larger than the sum of its proper divisors (116901).

1201100011 is a wasteful number, since it uses less digits than its factorization.

1201100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116900.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1201100011 is about 34656.8898056361. The cubic root of 1201100011 is about 1062.9831744933.

Adding to 1201100011 its reverse (1100011021), we get a palindrome (2301111032).

The spelling of 1201100011 in words is "one billion, two hundred one million, one hundred thousand, eleven".