11211201001 has 16 divisors (see below), whose sum is σ = 15052802688. Its totient is φ = 8064000000.

The previous prime is 11211200999. The next prime is 11211201059. The reversal of 11211201001 is 10010211211.

It is not a de Polignac number, because 11211201001 - 2¹ = 11211200999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11211207001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5599000 + ... + 5601001.

It is an arithmetic number, because the mean of its divisors is an integer number (940800168).

Almost surely, 2^11211201001 is an apocalyptic number.

11211201001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11211201001 is a deficient number, since it is larger than the sum of its proper divisors (3841601687).

11211201001 is a wasteful number, since it uses less digits than its factorization.

11211201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11200032.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11211201001 its reverse (10010211211), we get a palindrome (21221412212).

It can be divided in two parts, 11211 and 201001, that added together give a palindrome (212212).

The spelling of 11211201001 in words is "eleven billion, two hundred eleven million, two hundred one thousand, one".