10202121112091 has 2 divisors, whose sum is σ = 10202121112092. Its totient is φ = 10202121112090.

The previous prime is 10202121112037. The next prime is 10202121112093. The reversal of 10202121112091 is 19021112120201.

It is a happy number.

10202121112091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10202121112091 is a prime.

Together with 10202121112093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10202121112093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101060556045 + 5101060556046.

It is an arithmetic number, because the mean of its divisors is an integer number (5101060556046).

Almost surely, 2^{10202121112091} is an apocalyptic number.

10202121112091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202121112091 is an equidigital number, since it uses as much as digits as its factorization.

10202121112091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

Adding to 10202121112091 its reverse (19021112120201), we get a palindrome (29223233232292).

The spelling of 10202121112091 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, one hundred twelve thousand, ninety-one".