11001210121001 has 16 divisors (see below), whose sum is σ = 11132244388800. Its totient is φ = 10871131860288.

The previous prime is 11001210120931. The next prime is 11001210121007. The reversal of 11001210121001 is 10012101210011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11001210121001 is a prime.

It is a super-2 number, since 2×11001210121001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001210121007) 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, 21181715 + ... + 21694871.

It is an arithmetic number, because the mean of its divisors is an integer number (695765274300).

Almost surely, 2^{11001210121001} is an apocalyptic number.

It is an amenable number.

11001210121001 is a deficient number, since it is larger than the sum of its proper divisors (131034267799).

11001210121001 is a wasteful number, since it uses less digits than its factorization.

11001210121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514088.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11001210121001 its reverse (10012101210011), we get a palindrome (21013311331012).

The spelling of 11001210121001 in words is "eleven trillion, one billion, two hundred ten million, one hundred twenty-one thousand, one".