1212210120911 has 2 divisors, whose sum is σ = 1212210120912. Its totient is φ = 1212210120910.

The previous prime is 1212210120889. The next prime is 1212210120923. The reversal of 1212210120911 is 1190210122121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212210120911 - 2³⁸ = 937332213967 is a prime.

It is a super-2 number, since 2×1212210120911² (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 (1212210120211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606105060455 + 606105060456.

It is an arithmetic number, because the mean of its divisors is an integer number (606105060456).

Almost surely, 2^{1212210120911} is an apocalyptic number.

1212210120911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212210120911 is an equidigital number, since it uses as much as digits as its factorization.

1212210120911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 1212210120911 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred twenty thousand, nine hundred eleven".