9901121144111 has 8 divisors (see below), whose sum is σ = 9908312940480. Its totient is φ = 9893929744512.

The previous prime is 9901121144107. The next prime is 9901121144143. The reversal of 9901121144111 is 1114411211099.

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 9901121144111 - 2² = 9901121144107 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 (9901121144311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65373770 + ... + 65525048.

It is an arithmetic number, because the mean of its divisors is an integer number (1238539117560).

Almost surely, 2^{9901121144111} is an apocalyptic number.

9901121144111 is a deficient number, since it is larger than the sum of its proper divisors (7191796369).

9901121144111 is a wasteful number, since it uses less digits than its factorization.

9901121144111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198385.

The product of its (nonzero) digits is 2592, while the sum is 35.

The spelling of 9901121144111 in words is "nine trillion, nine hundred one billion, one hundred twenty-one million, one hundred forty-four thousand, one hundred eleven".