1121222211 has 8 divisors (see below), whose sum is σ = 1535367504. Its totient is φ = 727279200.

The previous prime is 1121222209. The next prime is 1121222213. The reversal of 1121222211 is 1122221211.

It is an interprime number because it is at equal distance from previous prime (1121222209) and next prime (1121222213).

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

It is not a de Polignac number, because 1121222211 - 2¹ = 1121222209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121222213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5050440 + ... + 5050661.

It is an arithmetic number, because the mean of its divisors is an integer number (191920938).

Almost surely, 2^1121222211 is an apocalyptic number.

1121222211 is a deficient number, since it is larger than the sum of its proper divisors (414145293).

1121222211 is a wasteful number, since it uses less digits than its factorization.

1121222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101141.

The product of its digits is 32, while the sum is 15.

The square root of 1121222211 is about 33484.6563518278. The cubic root of 1121222211 is about 1038.8764403888.

Adding to 1121222211 its reverse (1122221211), we get a palindrome (2243443422).

The spelling of 1121222211 in words is "one billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred eleven".