1111020111201 has 128 divisors (see below), whose sum is σ = 2044136779776. Its totient is φ = 517997306880.

The previous prime is 1111020111197. The next prime is 1111020111209. The reversal of 1111020111201 is 1021110201111.

It is not a de Polignac number, because 1111020111201 - 2² = 1111020111197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111020111209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 225219531 + ... + 225224463.

It is an arithmetic number, because the mean of its divisors is an integer number (15969818592).

Almost surely, 2^{1111020111201} is an apocalyptic number.

1111020111201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111020111201 is a deficient number, since it is larger than the sum of its proper divisors (933116668575).

1111020111201 is a wasteful number, since it uses less digits than its factorization.

1111020111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7031.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1111020111201 its reverse (1021110201111), we get a palindrome (2132130312312).

It can be divided in two parts, 1111020 and 111201, that added together give a palindrome (1222221).

The spelling of 1111020111201 in words is "one trillion, one hundred eleven billion, twenty million, one hundred eleven thousand, two hundred one".