10121121001191 has 64 divisors (see below), whose sum is σ = 14293747837440. Its totient is φ = 6362604380160.

The previous prime is 10121121001157. The next prime is 10121121001291. The reversal of 10121121001191 is 19110012112101.

It is a happy number.

10121121001191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10121121001191 - 2⁶ = 10121121001127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121121001141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2157559156 + ... + 2157563846.

It is an arithmetic number, because the mean of its divisors is an integer number (223339809960).

Almost surely, 2^{10121121001191} is an apocalyptic number.

10121121001191 is a deficient number, since it is larger than the sum of its proper divisors (4172626836249).

10121121001191 is a wasteful number, since it uses less digits than its factorization.

10121121001191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9376.

The product of its (nonzero) digits is 36, while the sum is 21.

Adding to 10121121001191 its reverse (19110012112101), we get a palindrome (29231133113292).

The spelling of 10121121001191 in words is "ten trillion, one hundred twenty-one billion, one hundred twenty-one million, one thousand, one hundred ninety-one".