11121111021201 has 16 divisors (see below), whose sum is σ = 15248904868800. Its totient is φ = 7206519465728.

The previous prime is 11121111021179. The next prime is 11121111021239. The reversal of 11121111021201 is 10212011112111.

It is a cyclic number.

It is not a de Polignac number, because 11121111021201 - 2⁷ = 11121111021073 is a prime.

It is a super-2 number, since 2×11121111021201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11121111021401) 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, 352968156 + ... + 352999661.

It is an arithmetic number, because the mean of its divisors is an integer number (953056554300).

Almost surely, 2^{11121111021201} is an apocalyptic number.

It is an amenable number.

11121111021201 is a deficient number, since it is larger than the sum of its proper divisors (4127793847599).

11121111021201 is an equidigital number, since it uses as much as digits as its factorization.

11121111021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705967968.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11121111021201 its reverse (10212011112111), we get a palindrome (21333122133312).

It can be divided in two parts, 1112111 and 1021201, that multiplied together give a palindrome (1135688865311).

The spelling of 11121111021201 in words is "eleven trillion, one hundred twenty-one billion, one hundred eleven million, twenty-one thousand, two hundred one".