1212200000010 has 24 divisors (see below), whose sum is σ = 3151720000260. Its totient is φ = 323253333312.

The previous prime is 1212199999993. The next prime is 1212200000047. The reversal of 1212200000010 is 100000022121.

It can be written as a sum of positive squares in 2 ways, for example, as 1006368106041 + 205831893969 = 1003179^2 + 453687^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1212199999938 and 1212200000001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6734444355 + ... + 6734444534.

Almost surely, 2^{1212200000010} is an apocalyptic number.

1212200000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212200000010 is an abundant number, since it is smaller than the sum of its proper divisors (1939520000250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212200000010 is a wasteful number, since it uses less digits than its factorization.

1212200000010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13468888902 (or 13468888899 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1212200000010 its reverse (100000022121), we get a palindrome (1312200022131).

The spelling of 1212200000010 in words is "one trillion, two hundred twelve billion, two hundred million, ten", and thus it is an aban number.