1212221234 has 16 divisors (see below), whose sum is σ = 2079088128. Its totient is φ = 519274752.

The previous prime is 1212221221. The next prime is 1212221243. The reversal of 1212221234 is 4321222121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11282 + ... + 50514.

It is an arithmetic number, because the mean of its divisors is an integer number (129943008).

Almost surely, 2^1212221234 is an apocalyptic number.

1212221234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1212221234 is a deficient number, since it is larger than the sum of its proper divisors (866866894).

1212221234 is a wasteful number, since it uses less digits than its factorization.

1212221234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41449.

The product of its digits is 384, while the sum is 20.

The square root of 1212221234 is about 34816.9676163792. The cubic root of 1212221234 is about 1066.2538910454.

Adding to 1212221234 its reverse (4321222121), we get a palindrome (5533443355).

The spelling of 1212221234 in words is "one billion, two hundred twelve million, two hundred twenty-one thousand, two hundred thirty-four".