1201012009943 has 2 divisors, whose sum is σ = 1201012009944. Its totient is φ = 1201012009942.

The previous prime is 1201012009927. The next prime is 1201012010053. The reversal of 1201012009943 is 3499002101021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201012009943 - 2⁴ = 1201012009927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201012009903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600506004971 + 600506004972.

It is an arithmetic number, because the mean of its divisors is an integer number (600506004972).

Almost surely, 2^{1201012009943} is an apocalyptic number.

1201012009943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201012009943 is an equidigital number, since it uses as much as digits as its factorization.

1201012009943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 1201012009943 in words is "one trillion, two hundred one billion, twelve million, nine thousand, nine hundred forty-three".