1211221034 has 4 divisors (see below), whose sum is σ = 1816831554. Its totient is φ = 605610516.

The previous prime is 1211221019. The next prime is 1211221043. The reversal of 1211221034 is 4301221121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 775455409 + 435765625 = 27847^2 + 20875^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 302805257 + ... + 302805260.

Almost surely, 2^1211221034 is an apocalyptic number.

1211221034 is a deficient number, since it is larger than the sum of its proper divisors (605610520).

1211221034 is an equidigital number, since it uses as much as digits as its factorization.

1211221034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605610519.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1211221034 is about 34802.6009660198. The cubic root of 1211221034 is about 1065.9605560888.

Adding to 1211221034 its reverse (4301221121), we get a palindrome (5512442155).

The spelling of 1211221034 in words is "one billion, two hundred eleven million, two hundred twenty-one thousand, thirty-four".