1001201121199 has 4 divisors (see below), whose sum is σ = 1005096845664. Its totient is φ = 997305396736.

The previous prime is 1001201121143. The next prime is 1001201121203. The reversal of 1001201121199 is 9911211021001.

It is a happy number.

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 1001201121199 - 2¹⁹ = 1001200596911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001201121799) 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, 1947861847 + ... + 1947862360.

It is an arithmetic number, because the mean of its divisors is an integer number (251274211416).

Almost surely, 2^{1001201121199} is an apocalyptic number.

1001201121199 is a deficient number, since it is larger than the sum of its proper divisors (3895724465).

1001201121199 is an equidigital number, since it uses as much as digits as its factorization.

1001201121199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3895724464.

The product of its (nonzero) digits is 324, while the sum is 28.

The spelling of 1001201121199 in words is "one trillion, one billion, two hundred one million, one hundred twenty-one thousand, one hundred ninety-nine".