10211121222091 has 2 divisors, whose sum is σ = 10211121222092. Its totient is φ = 10211121222090.

The previous prime is 10211121222013. The next prime is 10211121222143. The reversal of 10211121222091 is 19022212111201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10211121222091 - 2²⁵ = 10211087667659 is a prime.

It is a super-2 number, since 2×10211121222091² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10211121222011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105560611045 + 5105560611046.

It is an arithmetic number, because the mean of its divisors is an integer number (5105560611046).

Almost surely, 2^{10211121222091} is an apocalyptic number.

10211121222091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211121222091 is an equidigital number, since it uses as much as digits as its factorization.

10211121222091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 25.

Adding to 10211121222091 its reverse (19022212111201), we get a palindrome (29233333333292).

The spelling of 10211121222091 in words is "ten trillion, two hundred eleven billion, one hundred twenty-one million, two hundred twenty-two thousand, ninety-one".