100122020205 has 48 divisors (see below), whose sum is σ = 162659689920. Its totient is φ = 52587682048.

The previous prime is 100122020143. The next prime is 100122020221. The reversal of 100122020205 is 502020221001.

It is not a de Polignac number, because 100122020205 - 2¹⁰ = 100122019181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 47 ways as a sum of consecutive naturals, for example, 30738937 + ... + 30742193.

It is an arithmetic number, because the mean of its divisors is an integer number (3388743540).

Almost surely, 2^100122020205 is an apocalyptic number.

100122020205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100122020205 is a deficient number, since it is larger than the sum of its proper divisors (62537669715).

100122020205 is a wasteful number, since it uses less digits than its factorization.

100122020205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3658 (or 3551 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 100122020205 its reverse (502020221001), we get a palindrome (602142241206).

The spelling of 100122020205 in words is "one hundred billion, one hundred twenty-two million, twenty thousand, two hundred five".