20102100224 has 18 divisors (see below), whose sum is σ = 40125677130. Its totient is φ = 10051049984.

The previous prime is 20102100223. The next prime is 20102100241. The reversal of 20102100224 is 42200120102.

It can be written as a sum of positive squares in only one way, i.e., 19937440000 + 164660224 = 141200^2 + 12832^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20102100199 and 20102100208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102100223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39261659 + ... + 39262170.

It is an arithmetic number, because the mean of its divisors is an integer number (2229204285).

Almost surely, 2^20102100224 is an apocalyptic number.

It is an amenable number.

20102100224 is a deficient number, since it is larger than the sum of its proper divisors (20023576906).

20102100224 is an frugal number, since it uses more digits than its factorization.

20102100224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78523845 (or 78523831 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20102100224 its reverse (42200120102), we get a palindrome (62302220326).

The spelling of 20102100224 in words is "twenty billion, one hundred two million, one hundred thousand, two hundred twenty-four".