11122222221201 has 128 divisors (see below), whose sum is σ = 20270109081600. Its totient is φ = 5258028183552.

The previous prime is 11122222221199. The next prime is 11122222221281. The reversal of 11122222221201 is 10212222222111.

It is not a de Polignac number, because 11122222221201 - 2¹ = 11122222221199 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 (11122222221281) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7381650 + ... + 8759748.

It is an arithmetic number, because the mean of its divisors is an integer number (158360227200).

Almost surely, 2^{11122222221201} is an apocalyptic number.

It is an amenable number.

11122222221201 is a deficient number, since it is larger than the sum of its proper divisors (9147886860399).

11122222221201 is a wasteful number, since it uses less digits than its factorization.

11122222221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378223.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 11122222221201 its reverse (10212222222111), we get a palindrome (21334444443312).

The spelling of 11122222221201 in words is "eleven trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred one".