2028101281101 has 48 divisors (see below), whose sum is σ = 3583975170048. Its totient is φ = 1121530633200.

The previous prime is 2028101281097. The next prime is 2028101281159. The reversal of 2028101281101 is 1011821018202.

2028101281101 is a `hidden beast` number, since 2 + 0 + 281 + 0 + 1 + 281 + 101 = 666.

It is not a de Polignac number, because 2028101281101 - 2² = 2028101281097 is a prime.

It is a super-2 number, since 2×2028101281101² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028101281181) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19177905 + ... + 19283366.

It is an arithmetic number, because the mean of its divisors is an integer number (74666149376).

Almost surely, 2^{2028101281101} is an apocalyptic number.

2028101281101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2028101281101 is a deficient number, since it is larger than the sum of its proper divisors (1555873888947).

2028101281101 is an equidigital number, since it uses as much as digits as its factorization.

2028101281101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38461324 (or 38461312 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 27.

Adding to 2028101281101 its reverse (1011821018202), we get a palindrome (3039922299303).

The spelling of 2028101281101 in words is "two trillion, twenty-eight billion, one hundred one million, two hundred eighty-one thousand, one hundred one".