101211545455 has 16 divisors (see below), whose sum is σ = 128585178720. Its totient is φ = 76264288128.

The previous prime is 101211545431. The next prime is 101211545467. The reversal of 101211545455 is 554545112101.

It is a cyclic number.

It is not a de Polignac number, because 101211545455 - 2⁹ = 101211544943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101211545455.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3062712 + ... + 3095581.

It is an arithmetic number, because the mean of its divisors is an integer number (8036573670).

Almost surely, 2^101211545455 is an apocalyptic number.

101211545455 is a deficient number, since it is larger than the sum of its proper divisors (27373633265).

101211545455 is a wasteful number, since it uses less digits than its factorization.

101211545455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6158490.

The product of its (nonzero) digits is 20000, while the sum is 34.

Adding to 101211545455 its reverse (554545112101), we get a palindrome (655756657556).

The spelling of 101211545455 in words is "one hundred one billion, two hundred eleven million, five hundred forty-five thousand, four hundred fifty-five".