1211022011699 has 2 divisors, whose sum is σ = 1211022011700. Its totient is φ = 1211022011698.

The previous prime is 1211022011663. The next prime is 1211022011711. The reversal of 1211022011699 is 9961102201121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211022011699 - 2⁸ = 1211022011443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211022011659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605511005849 + 605511005850.

It is an arithmetic number, because the mean of its divisors is an integer number (605511005850).

Almost surely, 2^{1211022011699} is an apocalyptic number.

1211022011699 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211022011699 is an equidigital number, since it uses as much as digits as its factorization.

1211022011699 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 35.

The spelling of 1211022011699 in words is "one trillion, two hundred eleven billion, twenty-two million, eleven thousand, six hundred ninety-nine".