1011212201969 has 2 divisors, whose sum is σ = 1011212201970. Its totient is φ = 1011212201968.

The previous prime is 1011212201959. The next prime is 1011212202023. The reversal of 1011212201969 is 9691022121101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532746711025 + 478465490944 = 729895^2 + 691712^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011212201969 is a prime.

It is a super-2 number, since 2×1011212201969² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1011212201959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505606100984 + 505606100985.

It is an arithmetic number, because the mean of its divisors is an integer number (505606100985).

Almost surely, 2^{1011212201969} is an apocalyptic number.

It is an amenable number.

1011212201969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011212201969 is an equidigital number, since it uses as much as digits as its factorization.

1011212201969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 1011212201969 in words is "one trillion, eleven billion, two hundred twelve million, two hundred one thousand, nine hundred sixty-nine".