101100202020 has 36 divisors (see below), whose sum is σ = 306670613340. Its totient is φ = 26960053824.

The previous prime is 101100201991. The next prime is 101100202031. The reversal of 101100202020 is 20202001101.

It can be written as a sum of positive squares in 2 ways, for example, as 33342029604 + 67758172416 = 182598^2 + 260304^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

101100202020 is a modest number, since divided by 202020 gives 101100 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 101100201993 and 101100202011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280833715 + ... + 280834074.

Almost surely, 2^101100202020 is an apocalyptic number.

101100202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101100202020 is an abundant number, since it is smaller than the sum of its proper divisors (205570411320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101100202020 is a wasteful number, since it uses less digits than its factorization.

101100202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561667804 (or 561667799 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 101100202020 its reverse (20202001101), we get a palindrome (121302203121).

The spelling of 101100202020 in words is "one hundred one billion, one hundred million, two hundred two thousand, twenty".