1200202221091 has 2 divisors, whose sum is σ = 1200202221092. Its totient is φ = 1200202221090.

The previous prime is 1200202221061. The next prime is 1200202221103. The reversal of 1200202221091 is 1901222020021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200202221091 - 2³⁵ = 1165842482723 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200202221041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600101110545 + 600101110546.

It is an arithmetic number, because the mean of its divisors is an integer number (600101110546).

Almost surely, 2^{1200202221091} is an apocalyptic number.

1200202221091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200202221091 is an equidigital number, since it uses as much as digits as its factorization.

1200202221091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 1200202221091 in words is "one trillion, two hundred billion, two hundred two million, two hundred twenty-one thousand, ninety-one".