1001202111121 has 8 divisors (see below), whose sum is σ = 1011501539840. Its totient is φ = 990922938768.

The previous prime is 1001202111109. The next prime is 1001202111137. The reversal of 1001202111121 is 1211112021001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001202111121 - 2¹¹ = 1001202109073 is a prime.

It is a super-3 number, since 3×1001202111121³ (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 (1001202111191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4964721 + ... + 5162446.

It is an arithmetic number, because the mean of its divisors is an integer number (126437692480).

Almost surely, 2^{1001202111121} is an apocalyptic number.

It is an amenable number.

1001202111121 is a deficient number, since it is larger than the sum of its proper divisors (10299428719).

1001202111121 is a wasteful number, since it uses less digits than its factorization.

1001202111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10128183.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1001202111121 its reverse (1211112021001), we get a palindrome (2212314132122).

The spelling of 1001202111121 in words is "one trillion, one billion, two hundred two million, one hundred eleven thousand, one hundred twenty-one".