11211202102001 has 4 divisors (see below), whose sum is σ = 12230402293104. Its totient is φ = 10192001910900.

The previous prime is 11211202101977. The next prime is 11211202102031. The reversal of 11211202102001 is 10020120211211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211202102001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211202102031) 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, 509600095535 + ... + 509600095556.

It is an arithmetic number, because the mean of its divisors is an integer number (3057600573276).

Almost surely, 2^{11211202102001} is an apocalyptic number.

11211202102001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11211202102001 is a deficient number, since it is larger than the sum of its proper divisors (1019200191103).

11211202102001 is a wasteful number, since it uses less digits than its factorization.

11211202102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019200191102.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11211202102001 its reverse (10020120211211), we get a palindrome (21231322313212).

The spelling of 11211202102001 in words is "eleven trillion, two hundred eleven billion, two hundred two million, one hundred two thousand, one".