1212022012 has 48 divisors (see below), whose sum is σ = 2188105920. Its totient is φ = 587284992.

The previous prime is 1212022003. The next prime is 1212022013. The reversal of 1212022012 is 2102202121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1212021983 and 1212022001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212022013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6152298 + ... + 6152494.

It is an arithmetic number, because the mean of its divisors is an integer number (45585540).

Almost surely, 2^1212022012 is an apocalyptic number.

It is an amenable number.

1212022012 is a deficient number, since it is larger than the sum of its proper divisors (976083908).

1212022012 is a wasteful number, since it uses less digits than its factorization.

1212022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1212022012 is about 34814.1065087128. The cubic root of 1212022012 is about 1066.1954768263.

Adding to 1212022012 its reverse (2102202121), we get a palindrome (3314224133).

The spelling of 1212022012 in words is "one billion, two hundred twelve million, twenty-two thousand, twelve".