1211213322 has 24 divisors (see below), whose sum is σ = 2862868320. Its totient is φ = 367034280.

The previous prime is 1211213287. The next prime is 1211213329. The reversal of 1211213322 is 2233121121.

It is a super-2 number, since 2×1211213322² = 2934075422780551368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1211213295 and 1211213304.

It is not an unprimeable number, because it can be changed into a prime (1211213329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3058422 + ... + 3058817.

It is an arithmetic number, because the mean of its divisors is an integer number (119286180).

Almost surely, 2^1211213322 is an apocalyptic number.

1211213322 is an abundant number, since it is smaller than the sum of its proper divisors (1651654998).

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

1211213322 is a wasteful number, since it uses less digits than its factorization.

1211213322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6117258 (or 6117255 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1211213322 is about 34802.4901695267. The cubic root of 1211213322 is about 1065.9582937147.

Adding to 1211213322 its reverse (2233121121), we get a palindrome (3444334443).

The spelling of 1211213322 in words is "one billion, two hundred eleven million, two hundred thirteen thousand, three hundred twenty-two".