1111220101 has 8 divisors (see below), whose sum is σ = 1151379360. Its totient is φ = 1071771792.

The previous prime is 1111220087. The next prime is 1111220119. The reversal of 1111220101 is 1010221111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111220101 - 2¹⁵ = 1111187333 is a prime.

It is a super-2 number, since 2×1111220101² = 2469620225732900402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111220501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174555 + ... + 180808.

It is an arithmetic number, because the mean of its divisors is an integer number (143922420).

Almost surely, 2^1111220101 is an apocalyptic number.

It is an amenable number.

1111220101 is a deficient number, since it is larger than the sum of its proper divisors (40159259).

1111220101 is an equidigital number, since it uses as much as digits as its factorization.

1111220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355475.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1111220101 is about 33334.9681415777. The cubic root of 1111220101 is about 1035.7780332366.

Adding to 1111220101 its reverse (1010221111), we get a palindrome (2121441212).

It can be divided in two parts, 11112 and 20101, that added together give a palindrome (31213).

The spelling of 1111220101 in words is "one billion, one hundred eleven million, two hundred twenty thousand, one hundred one".