1212100000039 has 2 divisors, whose sum is σ = 1212100000040. Its totient is φ = 1212100000038.

The previous prime is 1212099999991. The next prime is 1212100000043. The reversal of 1212100000039 is 9300000012121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212100000039 - 2⁷ = 1212099999911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212099999971 and 1212100000025.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212103000039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606050000019 + 606050000020.

It is an arithmetic number, because the mean of its divisors is an integer number (606050000020).

Almost surely, 2^{1212100000039} is an apocalyptic number.

1212100000039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212100000039 is an equidigital number, since it uses as much as digits as its factorization.

1212100000039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The spelling of 1212100000039 in words is "one trillion, two hundred twelve billion, one hundred million, thirty-nine", and thus it is an aban number.