111021010202120 has 16 divisors (see below), whose sum is σ = 249797272954860. Its totient is φ = 44408404080832.

The previous prime is 111021010202119. The next prime is 111021010202143. The reversal of 111021010202120 is 21202010120111.

It can be written as a sum of positive squares in 2 ways, for example, as 101734375631716 + 9286634570404 = 10086346^2 + 3047398^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111021010202095 and 111021010202104.

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, 1387762627487 + ... + 1387762627566.

Almost surely, 2^{111021010202120} is an apocalyptic number.

111021010202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021010202120 is an abundant number, since it is smaller than the sum of its proper divisors (138776262752740).

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

111021010202120 is a wasteful number, since it uses less digits than its factorization.

111021010202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775525255064 (or 2775525255060 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111021010202120 its reverse (21202010120111), we get a palindrome (132223020322231).

The spelling of 111021010202120 in words is "one hundred eleven trillion, twenty-one billion, ten million, two hundred two thousand, one hundred twenty".