1020100200111 has 40 divisors (see below), whose sum is σ = 1554618938400. Its totient is φ = 666370006848.

The previous prime is 1020100200083. The next prime is 1020100200113. The reversal of 1020100200111 is 1110020010201.

It is a happy number.

It is not a de Polignac number, because 1020100200111 - 2¹¹ = 1020100198063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1020100200093 and 1020100200102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020100200113) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 3164790 + ... + 3472188.

It is an arithmetic number, because the mean of its divisors is an integer number (38865473460).

Almost surely, 2^{1020100200111} is an apocalyptic number.

1020100200111 is a deficient number, since it is larger than the sum of its proper divisors (534518738289).

1020100200111 is an equidigital number, since it uses as much as digits as its factorization.

1020100200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308237 (or 308228 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1020100200111 its reverse (1110020010201), we get a palindrome (2130120210312).

The spelling of 1020100200111 in words is "one trillion, twenty billion, one hundred million, two hundred thousand, one hundred eleven".