1121122211 has 8 divisors (see below), whose sum is σ = 1223859648. Its totient is φ = 1018521000.

The previous prime is 1121122201. The next prime is 1121122253. The reversal of 1121122211 is 1122211211.

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 1121122211 - 2¹⁸ = 1120860067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121122201) 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, 16445 + ... + 50126.

It is an arithmetic number, because the mean of its divisors is an integer number (152982456).

Almost surely, 2^1121122211 is an apocalyptic number.

1121122211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1121122211 is a deficient number, since it is larger than the sum of its proper divisors (102737437).

1121122211 is a wasteful number, since it uses less digits than its factorization.

1121122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68113.

The product of its digits is 16, while the sum is 14.

The square root of 1121122211 is about 33483.1630972941. The cubic root of 1121122211 is about 1038.8455542326.

Adding to 1121122211 its reverse (1122211211), we get a palindrome (2243333422).

The spelling of 1121122211 in words is "one billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred eleven".