1212210001012 has 6 divisors (see below), whose sum is σ = 2121367501778. Its totient is φ = 606105000504.

The previous prime is 1212210000959. The next prime is 1212210001021. The reversal of 1212210001012 is 2101000122121.

It can be written as a sum of positive squares in only one way, i.e., 769753550736 + 442456450276 = 877356^2 + 665174^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212210000983 and 1212210001001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151526250123 + ... + 151526250130.

Almost surely, 2^{1212210001012} is an apocalyptic number.

It is an amenable number.

1212210001012 is a deficient number, since it is larger than the sum of its proper divisors (909157500766).

1212210001012 is a wasteful number, since it uses less digits than its factorization.

1212210001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303052500257 (or 303052500255 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1212210001012 its reverse (2101000122121), we get a palindrome (3313210123133).

The spelling of 1212210001012 in words is "one trillion, two hundred twelve billion, two hundred ten million, one thousand, twelve".