1211211022 has 8 divisors (see below), whose sum is σ = 2076361776. Its totient is φ = 519090432.

The previous prime is 1211211011. The next prime is 1211211041. The reversal of 1211211022 is 2201121121.

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

It is a junction number, because it is equal to n+sod(n) for n = 1211210993 and 1211211011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43257523 + ... + 43257550.

It is an arithmetic number, because the mean of its divisors is an integer number (259545222).

Almost surely, 2^1211211022 is an apocalyptic number.

1211211022 is a deficient number, since it is larger than the sum of its proper divisors (865150754).

1211211022 is an equidigital number, since it uses as much as digits as its factorization.

1211211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86515082.

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

The square root of 1211211022 is about 34802.4571258985. The cubic root of 1211211022 is about 1065.9576189903.

Adding to 1211211022 its reverse (2201121121), we get a palindrome (3412332143).

The spelling of 1211211022 in words is "one billion, two hundred eleven million, two hundred eleven thousand, twenty-two".