101011005551 has 2 divisors, whose sum is σ = 101011005552. Its totient is φ = 101011005550.

The previous prime is 101011005541. The next prime is 101011005553. The reversal of 101011005551 is 155500110101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101011005551 is a prime.

Together with 101011005553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101011005553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505502775 + 50505502776.

It is an arithmetic number, because the mean of its divisors is an integer number (50505502776).

Almost surely, 2^101011005551 is an apocalyptic number.

101011005551 is a deficient number, since it is larger than the sum of its proper divisors (1).

101011005551 is an equidigital number, since it uses as much as digits as its factorization.

101011005551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125, while the sum is 20.

Adding to 101011005551 its reverse (155500110101), we get a palindrome (256511115652).

The spelling of 101011005551 in words is "one hundred one billion, eleven million, five thousand, five hundred fifty-one".