20102116 has 6 divisors (see below), whose sum is σ = 35178710. Its totient is φ = 10051056.

The previous prime is 20102111. The next prime is 20102119. The reversal of 20102116 is 61120102.

It can be written as a sum of positive squares in only one way, i.e., 18028516 + 2073600 = 4246^2 + 1440^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20102096 and 20102105.

It is not an unprimeable number, because it can be changed into a prime (20102111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2512761 + ... + 2512768.

Almost surely, 2^20102116 is an apocalyptic number.

It is an amenable number.

20102116 is a deficient number, since it is larger than the sum of its proper divisors (15076594).

20102116 is a wasteful number, since it uses less digits than its factorization.

20102116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025533 (or 5025531 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 20102116 is about 4483.5383348422. The cubic root of 20102116 is about 271.9029534124.

Adding to 20102116 its reverse (61120102), we get a palindrome (81222218).

The spelling of 20102116 in words is "twenty million, one hundred two thousand, one hundred sixteen".