1121022211 has 16 divisors (see below), whose sum is σ = 1257876000. Its totient is φ = 992798208.

The previous prime is 1121022209. The next prime is 1121022223. The reversal of 1121022211 is 1122201211.

It is a cyclic number.

It is not a de Polignac number, because 1121022211 - 2¹ = 1121022209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121022191 and 1121022200.

It is not an unprimeable number, because it can be changed into a prime (1121022271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36481 + ... + 59773.

It is an arithmetic number, because the mean of its divisors is an integer number (78617250).

Almost surely, 2^1121022211 is an apocalyptic number.

1121022211 is a deficient number, since it is larger than the sum of its proper divisors (136853789).

1121022211 is a wasteful number, since it uses less digits than its factorization.

1121022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23478.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1121022211 is about 33481.6697761626. The cubic root of 1121022211 is about 1038.8146662399.

Adding to 1121022211 its reverse (1122201211), we get a palindrome (2243223422).

The spelling of 1121022211 in words is "one billion, one hundred twenty-one million, twenty-two thousand, two hundred eleven".