1201121211019 has 2 divisors, whose sum is σ = 1201121211020. Its totient is φ = 1201121211018.

The previous prime is 1201121210963. The next prime is 1201121211049. The reversal of 1201121211019 is 9101121211021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201121211019 - 2⁹ = 1201121210507 is a prime.

It is a super-2 number, since 2×1201121211019² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1201121211049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600560605509 + 600560605510.

It is an arithmetic number, because the mean of its divisors is an integer number (600560605510).

Almost surely, 2^{1201121211019} is an apocalyptic number.

1201121211019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201121211019 is an equidigital number, since it uses as much as digits as its factorization.

1201121211019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 1201121211019 in words is "one trillion, two hundred one billion, one hundred twenty-one million, two hundred eleven thousand, nineteen".