1212195164 has 24 divisors (see below), whose sum is σ = 2132446848. Its totient is φ = 602933760.

The previous prime is 1212195161. The next prime is 1212195199. The reversal of 1212195164 is 4615912121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212195164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212195161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1222709 + ... + 1223699.

It is an arithmetic number, because the mean of its divisors is an integer number (88851952).

Almost surely, 2^1212195164 is an apocalyptic number.

It is an amenable number.

1212195164 is a deficient number, since it is larger than the sum of its proper divisors (920251684).

1212195164 is a wasteful number, since it uses less digits than its factorization.

1212195164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285 (or 2283 counting only the distinct ones).

The product of its digits is 4320, while the sum is 32.

The square root of 1212195164 is about 34816.5932279423. The cubic root of 1212195164 is about 1066.2462473807.

The spelling of 1212195164 in words is "one billion, two hundred twelve million, one hundred ninety-five thousand, one hundred sixty-four".