1202020211191 has 4 divisors (see below), whose sum is σ = 1202173518384. Its totient is φ = 1201866904000.

The previous prime is 1202020211137. The next prime is 1202020211201. The reversal of 1202020211191 is 1911120202021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1202020211191 - 2²⁷ = 1201885993463 is a prime.

It is a super-2 number, since 2×1202020211191² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202020611191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76641835 + ... + 76657516.

It is an arithmetic number, because the mean of its divisors is an integer number (300543379596).

Almost surely, 2^{1202020211191} is an apocalyptic number.

1202020211191 is a deficient number, since it is larger than the sum of its proper divisors (153307193).

1202020211191 is an equidigital number, since it uses as much as digits as its factorization.

1202020211191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153307192.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 1202020211191 in words is "one trillion, two hundred two billion, twenty million, two hundred eleven thousand, one hundred ninety-one".