111110202020 has 12 divisors (see below), whose sum is σ = 233331424284. Its totient is φ = 44444080800.

The previous prime is 111110201999. The next prime is 111110202031. The reversal of 111110202020 is 20202011111.

It can be written as a sum of positive squares in 2 ways, for example, as 73142120704 + 37968081316 = 270448^2 + 194854^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111110201992 and 111110202010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2777755031 + ... + 2777755070.

It is an arithmetic number, because the mean of its divisors is an integer number (19444285357).

Almost surely, 2^111110202020 is an apocalyptic number.

111110202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111110202020 is an abundant number, since it is smaller than the sum of its proper divisors (122221222264).

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

111110202020 is a wasteful number, since it uses less digits than its factorization.

111110202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555510110 (or 5555510108 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111110202020 its reverse (20202011111), we get a palindrome (131312213131).

The spelling of 111110202020 in words is "one hundred eleven billion, one hundred ten million, two hundred two thousand, twenty".