10021211020091 has 2 divisors, whose sum is σ = 10021211020092. Its totient is φ = 10021211020090.

The previous prime is 10021211020087. The next prime is 10021211020133. The reversal of 10021211020091 is 19002011212001.

It is a weak prime.

It is an emirp because it is prime and its reverse (19002011212001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10021211020091 - 2² = 10021211020087 is a prime.

It is not a weakly prime, because it can be changed into another prime (10021211020081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010605510045 + 5010605510046.

It is an arithmetic number, because the mean of its divisors is an integer number (5010605510046).

Almost surely, 2^{10021211020091} is an apocalyptic number.

10021211020091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021211020091 is an equidigital number, since it uses as much as digits as its factorization.

10021211020091 is an odious number, because the sum of its binary digits is odd.

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

Adding to 10021211020091 its reverse (19002011212001), we get a palindrome (29023222232092).

It can be divided in two parts, 10021 and 211020091, that added together give a palindrome (211030112).

The spelling of 10021211020091 in words is "ten trillion, twenty-one billion, two hundred eleven million, twenty thousand, ninety-one".