1111220201 has 16 divisors (see below), whose sum is σ = 1396760064. Its totient is φ = 860497344.

The previous prime is 1111220189. The next prime is 1111220213. The reversal of 1111220201 is 1020221111.

It is an interprime number because it is at equal distance from previous prime (1111220189) and next prime (1111220213).

It is a de Polignac number, because none of the positive numbers 2^k-1111220201 is a prime.

It is a super-2 number, since 2×1111220201² = 2469620670220960802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1111220221) 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 15 ways as a sum of consecutive naturals, for example, 125630 + ... + 134183.

It is an arithmetic number, because the mean of its divisors is an integer number (87297504).

Almost surely, 2^1111220201 is an apocalyptic number.

It is an amenable number.

1111220201 is a deficient number, since it is larger than the sum of its proper divisors (285539863).

1111220201 is a wasteful number, since it uses less digits than its factorization.

1111220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259880.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1111220201 is about 33334.9696415041. The cubic root of 1111220201 is about 1035.7780643069.

Adding to 1111220201 its reverse (1020221111), we get a palindrome (2131441312).

It can be divided in two parts, 11112 and 20201, that added together give a palindrome (31313).

The spelling of 1111220201 in words is "one billion, one hundred eleven million, two hundred twenty thousand, two hundred one".