1121021211 has 16 divisors (see below), whose sum is σ = 1510299648. Its totient is φ = 739586400.

The previous prime is 1121021197. The next prime is 1121021263. The reversal of 1121021211 is 1121201211.

It is not a de Polignac number, because 1121021211 - 2⁹ = 1121020699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121021281) 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, 107916 + ... + 117846.

It is an arithmetic number, because the mean of its divisors is an integer number (94393728).

Almost surely, 2^1121021211 is an apocalyptic number.

1121021211 is a deficient number, since it is larger than the sum of its proper divisors (389278437).

1121021211 is a wasteful number, since it uses less digits than its factorization.

1121021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10322.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1121021211 is about 33481.6548426149. The cubic root of 1121021211 is about 1038.8143573507.

Adding to 1121021211 its reverse (1121201211), we get a palindrome (2242222422).

The spelling of 1121021211 in words is "one billion, one hundred twenty-one million, twenty-one thousand, two hundred eleven".