11201001221001 has 16 divisors (see below), whose sum is σ = 15619992506496. Its totient is φ = 7126171658496.

The previous prime is 11201001220999. The next prime is 11201001221017. The reversal of 11201001221001 is 10012210010211.

It is not a de Polignac number, because 11201001221001 - 2¹ = 11201001220999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11201001221051) 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, 187422030 + ... + 187481783.

It is an arithmetic number, because the mean of its divisors is an integer number (976249531656).

Almost surely, 2^{11201001221001} is an apocalyptic number.

It is an amenable number.

11201001221001 is a deficient number, since it is larger than the sum of its proper divisors (4418991285495).

11201001221001 is a wasteful number, since it uses less digits than its factorization.

11201001221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374904272.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11201001221001 its reverse (10012210010211), we get a palindrome (21213211231212).

The spelling of 11201001221001 in words is "eleven trillion, two hundred one billion, one million, two hundred twenty-one thousand, one".