1111220120101 has 32 divisors (see below), whose sum is σ = 1441025331200. Its totient is φ = 832130055360.

The previous prime is 1111220120099. The next prime is 1111220120167. The reversal of 1111220120101 is 1010210221111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1111220120101 - 2¹ = 1111220120099 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111220120401) 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, 1487146 + ... + 2105716.

It is an arithmetic number, because the mean of its divisors is an integer number (45032041600).

Almost surely, 2^{1111220120101} is an apocalyptic number.

It is an amenable number.

1111220120101 is a deficient number, since it is larger than the sum of its proper divisors (329805211099).

1111220120101 is a wasteful number, since it uses less digits than its factorization.

1111220120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619649.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1111220120101 its reverse (1010210221111), we get a palindrome (2121430341212).

It can be divided in two parts, 1111220 and 120101, that added together give a palindrome (1231321).

The spelling of 1111220120101 in words is "one trillion, one hundred eleven billion, two hundred twenty million, one hundred twenty thousand, one hundred one".