1212020111069 has 2 divisors, whose sum is σ = 1212020111070. Its totient is φ = 1212020111068.

The previous prime is 1212020111017. The next prime is 1212020111119. The reversal of 1212020111069 is 9601110202121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1209588634969 + 2431476100 = 1099813^2 + 49310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212020111069 - 2²⁸ = 1211751675613 is a prime.

It is a super-2 number, since 2×1212020111069² (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 (1212020111009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606010055534 + 606010055535.

It is an arithmetic number, because the mean of its divisors is an integer number (606010055535).

Almost surely, 2^{1212020111069} is an apocalyptic number.

It is an amenable number.

1212020111069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212020111069 is an equidigital number, since it uses as much as digits as its factorization.

1212020111069 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 26.

The spelling of 1212020111069 in words is "one trillion, two hundred twelve billion, twenty million, one hundred eleven thousand, sixty-nine".