1216746212 has 24 divisors (see below), whose sum is σ = 2326695840. Its totient is φ = 552157760.

The previous prime is 1216746211. The next prime is 1216746227. The reversal of 1216746212 is 2126476121.

It is not an unprimeable number, because it can be changed into a prime (1216746211) 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 7 ways as a sum of consecutive naturals, for example, 4739 + ... + 49557.

It is an arithmetic number, because the mean of its divisors is an integer number (96945660).

Almost surely, 2^1216746212 is an apocalyptic number.

It is an amenable number.

1216746212 is a deficient number, since it is larger than the sum of its proper divisors (1109949628).

1216746212 is a wasteful number, since it uses less digits than its factorization.

1216746212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45451 (or 45449 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 1216746212 is about 34881.8894557047. The cubic root of 1216746212 is about 1067.5789474453.

The spelling of 1216746212 in words is "one billion, two hundred sixteen million, seven hundred forty-six thousand, two hundred twelve".