1213322211 has 12 divisors (see below), whose sum is σ = 1774762080. Its totient is φ = 798642000.

The previous prime is 1213322207. The next prime is 1213322233. The reversal of 1213322211 is 1122233121.

1213322211 is a `hidden beast` number, since 121 + 332 + 2 + 211 = 666.

It is not a de Polignac number, because 1213322211 - 2² = 1213322207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213322291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 852540 + ... + 853961.

It is an arithmetic number, because the mean of its divisors is an integer number (147896840).

Almost surely, 2^1213322211 is an apocalyptic number.

1213322211 is a deficient number, since it is larger than the sum of its proper divisors (561439869).

1213322211 is a wasteful number, since it uses less digits than its factorization.

1213322211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706586 (or 1706583 counting only the distinct ones).

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

The square root of 1213322211 is about 34832.7749540573. The cubic root of 1213322211 is about 1066.5765950094.

Adding to 1213322211 its reverse (1122233121), we get a palindrome (2335555332).

The spelling of 1213322211 in words is "one billion, two hundred thirteen million, three hundred twenty-two thousand, two hundred eleven".