1212001012 has 6 divisors (see below), whose sum is σ = 2121001778. Its totient is φ = 606000504.

The previous prime is 1212001003. The next prime is 1212001019. The reversal of 1212001012 is 2101002121.

It can be written as a sum of positive squares in only one way, i.e., 735277456 + 476723556 = 27116^2 + 21834^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1212001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212001019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151500123 + ... + 151500130.

Almost surely, 2^1212001012 is an apocalyptic number.

It is an amenable number.

1212001012 is a deficient number, since it is larger than the sum of its proper divisors (909000766).

1212001012 is a wasteful number, since it uses less digits than its factorization.

1212001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303000257 (or 303000255 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1212001012 is about 34813.8049055256. The cubic root of 1212001012 is about 1066.1893190079.

Adding to 1212001012 its reverse (2101002121), we get a palindrome (3313003133).

The spelling of 1212001012 in words is "one billion, two hundred twelve million, one thousand, twelve".