10101220102091 has 2 divisors, whose sum is σ = 10101220102092. Its totient is φ = 10101220102090.

The previous prime is 10101220102087. The next prime is 10101220102109. The reversal of 10101220102091 is 19020102210101.

Together with next prime (10101220102109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (19020102210101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10101220102091 - 2² = 10101220102087 is a prime.

It is not a weakly prime, because it can be changed into another prime (10101220102021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050610051045 + 5050610051046.

It is an arithmetic number, because the mean of its divisors is an integer number (5050610051046).

Almost surely, 2^{10101220102091} is an apocalyptic number.

10101220102091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101220102091 is an equidigital number, since it uses as much as digits as its factorization.

10101220102091 is an evil number, because the sum of its binary digits is even.

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

Adding to 10101220102091 its reverse (19020102210101), we get a palindrome (29121322312192).

The spelling of 10101220102091 in words is "ten trillion, one hundred one billion, two hundred twenty million, one hundred two thousand, ninety-one".