1211001222 has 32 divisors (see below), whose sum is σ = 2567462400. Its totient is φ = 379479168.

The previous prime is 1211001193. The next prime is 1211001223. The reversal of 1211001222 is 2221001121.

It is a super-3 number, since 3×1211001222³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211001198 and 1211001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211001223) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 87279 + ... + 100197.

It is an arithmetic number, because the mean of its divisors is an integer number (80233200).

Almost surely, 2^1211001222 is an apocalyptic number.

1211001222 is an abundant number, since it is smaller than the sum of its proper divisors (1356461178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211001222 is a wasteful number, since it uses less digits than its factorization.

1211001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13860.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1211001222 is about 34799.4428403674. The cubic root of 1211001222 is about 1065.8960687957.

Adding to 1211001222 its reverse (2221001121), we get a palindrome (3432002343).

The spelling of 1211001222 in words is "one billion, two hundred eleven million, one thousand, two hundred twenty-two".