1212123043130 has 16 divisors (see below), whose sum is σ = 2181858633864. Its totient is φ = 484840960320.

The previous prime is 1212123043123. The next prime is 1212123043151. The reversal of 1212123043130 is 313403212121.

It can be written as a sum of positive squares in 4 ways, for example, as 837717342361 + 374405700769 = 915269^2 + 611887^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212123043096 and 1212123043105.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 396941 + ... + 1606800.

Almost surely, 2^{1212123043130} is an apocalyptic number.

1212123043130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212123043130 is a deficient number, since it is larger than the sum of its proper divisors (969735590734).

1212123043130 is a wasteful number, since it uses less digits than its factorization.

1212123043130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064241.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1212123043130 its reverse (313403212121), we get a palindrome (1525526255251).

The spelling of 1212123043130 in words is "one trillion, two hundred twelve billion, one hundred twenty-three million, forty-three thousand, one hundred thirty".