101000128469221 has 2 divisors, whose sum is σ = 101000128469222. Its totient is φ = 101000128469220.

The previous prime is 101000128469197. The next prime is 101000128469239. The reversal of 101000128469221 is 122964821000101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68981562804196 + 32018565665025 = 8305514^2 + 5658495^2 .

It is an emirp because it is prime and its reverse (122964821000101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101000128469221 - 2¹⁵ = 101000128436453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101000128469291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50500064234610 + 50500064234611.

It is an arithmetic number, because the mean of its divisors is an integer number (50500064234611).

Almost surely, 2^{101000128469221} is an apocalyptic number.

It is an amenable number.

101000128469221 is a deficient number, since it is larger than the sum of its proper divisors (1).

101000128469221 is an equidigital number, since it uses as much as digits as its factorization.

101000128469221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 37.

Adding to 101000128469221 its reverse (122964821000101), we get a palindrome (223964949469322).

The spelling of 101000128469221 in words is "one hundred one trillion, one hundred twenty-eight million, four hundred sixty-nine thousand, two hundred twenty-one".