11222222012001 has 192 divisors, whose sum is σ = 22202344120320. Its totient is φ = 5274058936320.

The previous prime is 11222222011969. The next prime is 11222222012003. The reversal of 11222222012001 is 10021022222211.

It is a happy number.

It is not a de Polignac number, because 11222222012001 - 2⁵ = 11222222011969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11222222012003) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 89946580 + ... + 90071258.

It is an arithmetic number, because the mean of its divisors is an integer number (115637208960).

Almost surely, 2^{11222222012001} is an apocalyptic number.

11222222012001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11222222012001 is a deficient number, since it is larger than the sum of its proper divisors (10980122108319).

11222222012001 is a wasteful number, since it uses less digits than its factorization.

11222222012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124916 (or 124913 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11222222012001 its reverse (10021022222211), we get a palindrome (21243244234212).

The spelling of 11222222012001 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty-two million, twelve thousand, one".