1201121000197 has 4 divisors (see below), whose sum is σ = 1201195763980. Its totient is φ = 1201046236416.

The previous prime is 1201121000179. The next prime is 1201121000203. The reversal of 1201121000197 is 7910001211021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 846668661316 + 354452338881 = 920146^2 + 595359^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201121000197 - 2⁷ = 1201121000069 is a prime.

It is a super-2 number, since 2×1201121000197² (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 (1201121000137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37357788 + ... + 37389925.

It is an arithmetic number, because the mean of its divisors is an integer number (300298940995).

Almost surely, 2^{1201121000197} is an apocalyptic number.

It is an amenable number.

1201121000197 is a deficient number, since it is larger than the sum of its proper divisors (74763783).

1201121000197 is an equidigital number, since it uses as much as digits as its factorization.

1201121000197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74763782.

The product of its (nonzero) digits is 252, while the sum is 25.

The spelling of 1201121000197 in words is "one trillion, two hundred one billion, one hundred twenty-one million, one hundred ninety-seven", and thus it is an aban number.