1201120210091 has 4 divisors (see below), whose sum is σ = 1242538148400. Its totient is φ = 1159702271784.

The previous prime is 1201120210049. The next prime is 1201120210123. The reversal of 1201120210091 is 1900120211021.

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 1201120210091 - 2¹⁰ = 1201120209067 is a prime.

It is a super-3 number, since 3×1201120210091³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201120210001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20708969111 + ... + 20708969168.

It is an arithmetic number, because the mean of its divisors is an integer number (310634537100).

Almost surely, 2^{1201120210091} is an apocalyptic number.

1201120210091 is a deficient number, since it is larger than the sum of its proper divisors (41417938309).

1201120210091 is an equidigital number, since it uses as much as digits as its factorization.

1201120210091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41417938308.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1201120210091 in words is "one trillion, two hundred one billion, one hundred twenty million, two hundred ten thousand, ninety-one".