101220011791 has 2 divisors, whose sum is σ = 101220011792. Its totient is φ = 101220011790.

The previous prime is 101220011777. The next prime is 101220011803. The reversal of 101220011791 is 197110022101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101220011791 - 2²¹ = 101217914639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220011891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610005895 + 50610005896.

It is an arithmetic number, because the mean of its divisors is an integer number (50610005896).

Almost surely, 2^101220011791 is an apocalyptic number.

101220011791 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220011791 is an equidigital number, since it uses as much as digits as its factorization.

101220011791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 25.

Adding to 101220011791 its reverse (197110022101), we get a palindrome (298330033892).

The spelling of 101220011791 in words is "one hundred one billion, two hundred twenty million, eleven thousand, seven hundred ninety-one".