11121111210001 has 32 divisors (see below), whose sum is σ = 12897074534400. Its totient is φ = 9497244057600.

The previous prime is 11121111209987. The next prime is 11121111210047. The reversal of 11121111210001 is 10001211112111.

It is not a de Polignac number, because 11121111210001 - 2⁵ = 11121111209969 is a prime.

It is a super-2 number, since 2×11121111210001² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (11121111210061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206106576 + ... + 206160526.

It is an arithmetic number, because the mean of its divisors is an integer number (403033579200).

Almost surely, 2^{11121111210001} is an apocalyptic number.

It is an amenable number.

11121111210001 is a deficient number, since it is larger than the sum of its proper divisors (1775963324399).

11121111210001 is a wasteful number, since it uses less digits than its factorization.

11121111210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69849.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11121111210001 its reverse (10001211112111), we get a palindrome (21122322322112).

The spelling of 11121111210001 in words is "eleven trillion, one hundred twenty-one billion, one hundred eleven million, two hundred ten thousand, one".