11222222222001 has 96 divisors (see below), whose sum is σ = 17777585719296. Its totient is φ = 6168185856000.

The previous prime is 11222222221999. The next prime is 11222222222023. The reversal of 11222222222001 is 10022222222211.

It is not a de Polignac number, because 11222222222001 - 2¹ = 11222222221999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (11222222222501) 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 95 ways as a sum of consecutive naturals, for example, 7143361546 + ... + 7143363116.

It is an arithmetic number, because the mean of its divisors is an integer number (185183184576).

Almost surely, 2^{11222222222001} is an apocalyptic number.

It is an amenable number.

11222222222001 is a deficient number, since it is larger than the sum of its proper divisors (6555363497295).

11222222222001 is a wasteful number, since it uses less digits than its factorization.

11222222222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911 (or 2882 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 11222222222001 its reverse (10022222222211), we get a palindrome (21244444444212).

The spelling of 11222222222001 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, one".