10221211002091 has 2 divisors, whose sum is σ = 10221211002092. Its totient is φ = 10221211002090.

The previous prime is 10221211002089. The next prime is 10221211002139. The reversal of 10221211002091 is 19020011212201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10221211002091 - 2¹ = 10221211002089 is a prime.

It is a super-2 number, since 2×10221211002091² (a number of 27 digits) contains 22 as substring.

Together with 10221211002089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10221211002001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110605501045 + 5110605501046.

It is an arithmetic number, because the mean of its divisors is an integer number (5110605501046).

Almost surely, 2^{10221211002091} is an apocalyptic number.

10221211002091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221211002091 is an equidigital number, since it uses as much as digits as its factorization.

10221211002091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 10221211002091 its reverse (19020011212201), we get a palindrome (29241222214292).

The spelling of 10221211002091 in words is "ten trillion, two hundred twenty-one billion, two hundred eleven million, two thousand, ninety-one".