11221111110001 has 16 divisors (see below), whose sum is σ = 12621561765120. Its totient is φ = 9898264854720.

The previous prime is 11221111109941. The next prime is 11221111110023. The reversal of 11221111110001 is 10001111112211.

It is a cyclic number.

It is not a de Polignac number, because 11221111110001 - 2³⁹ = 10671355296113 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221111114001) 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, 17368341 + ... + 18002818.

It is an arithmetic number, because the mean of its divisors is an integer number (788847610320).

Almost surely, 2^{11221111110001} is an apocalyptic number.

It is an amenable number.

11221111110001 is a deficient number, since it is larger than the sum of its proper divisors (1400450655119).

11221111110001 is a wasteful number, since it uses less digits than its factorization.

11221111110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35372256.

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

Adding to 11221111110001 its reverse (10001111112211), we get a palindrome (21222222222212).

The spelling of 11221111110001 in words is "eleven trillion, two hundred twenty-one billion, one hundred eleven million, one hundred ten thousand, one".