1201211020069 has 2 divisors, whose sum is σ = 1201211020070. Its totient is φ = 1201211020068.

The previous prime is 1201211020033. The next prime is 1201211020109. The reversal of 1201211020069 is 9600201121021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 877148379844 + 324062640225 = 936562^2 + 569265^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201211020069 - 2⁹ = 1201211019557 is a prime.

It is a super-2 number, since 2×1201211020069² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201211050069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600605510034 + 600605510035.

It is an arithmetic number, because the mean of its divisors is an integer number (600605510035).

Almost surely, 2^{1201211020069} is an apocalyptic number.

It is an amenable number.

1201211020069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201211020069 is an equidigital number, since it uses as much as digits as its factorization.

1201211020069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 1201211020069 in words is "one trillion, two hundred one billion, two hundred eleven million, twenty thousand, sixty-nine".