9901010122121 has 8 divisors (see below), whose sum is σ = 9979563362304. Its totient is φ = 9822466140480.

The previous prime is 9901010122109. The next prime is 9901010122153. The reversal of 9901010122121 is 1212210101099.

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 9901010122121 - 2¹⁰ = 9901010121097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9901010122181) 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, 159440 + ... + 4452801.

It is an arithmetic number, because the mean of its divisors is an integer number (1247445420288).

Almost surely, 2^{9901010122121} is an apocalyptic number.

It is an amenable number.

9901010122121 is a deficient number, since it is larger than the sum of its proper divisors (78553240183).

9901010122121 is a wasteful number, since it uses less digits than its factorization.

9901010122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4629271.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 9901010122121 in words is "nine trillion, nine hundred one billion, ten million, one hundred twenty-two thousand, one hundred twenty-one".