11122222001 has 16 divisors (see below), whose sum is σ = 12858015168. Its totient is φ = 9508224000.

The previous prime is 11122221997. The next prime is 11122222003. The reversal of 11122222001 is 10022222111.

It is not a de Polignac number, because 11122222001 - 2² = 11122221997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122222003) 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, 199826 + ... + 249348.

It is an arithmetic number, because the mean of its divisors is an integer number (803625948).

Almost surely, 2^11122222001 is an apocalyptic number.

11122222001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11122222001 is a deficient number, since it is larger than the sum of its proper divisors (1735793167).

11122222001 is a wasteful number, since it uses less digits than its factorization.

11122222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50752.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11122222001 its reverse (10022222111), we get a palindrome (21144444112).

The spelling of 11122222001 in words is "eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, one".