10102020121091 has 8 divisors (see below), whose sum is σ = 10336537266000. Its totient is φ = 9869725887840.

The previous prime is 10102020120991. The next prime is 10102020121147. The reversal of 10102020121091 is 19012102020101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10102020121091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10102020126091) 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, 555718721 + ... + 555736898.

It is an arithmetic number, because the mean of its divisors is an integer number (1292067158250).

Almost surely, 2^{10102020121091} is an apocalyptic number.

10102020121091 is a deficient number, since it is larger than the sum of its proper divisors (234517144909).

10102020121091 is a wasteful number, since it uses less digits than its factorization.

10102020121091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111455829.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 10102020121091 its reverse (19012102020101), we get a palindrome (29114122141192).

The spelling of 10102020121091 in words is "ten trillion, one hundred two billion, twenty million, one hundred twenty-one thousand, ninety-one".