9100010002121 has 4 divisors (see below), whose sum is σ = 9413803450500. Its totient is φ = 8786216553744.

The previous prime is 9100010002091. The next prime is 9100010002129. The reversal of 9100010002121 is 1212000100019.

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 3071831096896 + 6028178905225 = 1752664^2 + 2455235^2 .

It is a cyclic number.

It is not a de Polignac number, because 9100010002121 - 2¹⁰ = 9100010001097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9100010002121.

It is not an unprimeable number, because it can be changed into a prime (9100010002129) 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, 156896724146 + ... + 156896724203.

It is an arithmetic number, because the mean of its divisors is an integer number (2353450862625).

Almost surely, 2^{9100010002121} is an apocalyptic number.

It is an amenable number.

9100010002121 is a deficient number, since it is larger than the sum of its proper divisors (313793448379).

9100010002121 is a wasteful number, since it uses less digits than its factorization.

9100010002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313793448378.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 9100010002121 in words is "nine trillion, one hundred billion, ten million, two thousand, one hundred twenty-one".