1212111434 has 24 divisors (see below), whose sum is σ = 1926930720. Its totient is φ = 571514832.

The previous prime is 1212111409. The next prime is 1212111443. The reversal of 1212111434 is 4341112121.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63947 + ... + 80705.

It is an arithmetic number, because the mean of its divisors is an integer number (80288780).

Almost surely, 2^1212111434 is an apocalyptic number.

1212111434 is a deficient number, since it is larger than the sum of its proper divisors (714819286).

1212111434 is a wasteful number, since it uses less digits than its factorization.

1212111434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16862 (or 16833 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

The square root of 1212111434 is about 34815.3907632817. The cubic root of 1212111434 is about 1066.2216971936.

Adding to 1212111434 its reverse (4341112121), we get a palindrome (5553223555).

The spelling of 1212111434 in words is "one billion, two hundred twelve million, one hundred eleven thousand, four hundred thirty-four".