1000212211969 has 2 divisors, whose sum is σ = 1000212211970. Its totient is φ = 1000212211968.

The previous prime is 1000212211919. The next prime is 1000212211979. The reversal of 1000212211969 is 9691122120001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1000190009025 + 22202944 = 1000095^2 + 4712^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000212211969 - 2³⁵ = 965852473601 is a prime.

It is a super-2 number, since 2×1000212211969² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1000212211919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500106105984 + 500106105985.

It is an arithmetic number, because the mean of its divisors is an integer number (500106105985).

Almost surely, 2^{1000212211969} is an apocalyptic number.

It is an amenable number.

1000212211969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000212211969 is an equidigital number, since it uses as much as digits as its factorization.

1000212211969 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 34.

The spelling of 1000212211969 in words is "one trillion, two hundred twelve million, two hundred eleven thousand, nine hundred sixty-nine".