112120210210021 has 12 divisors (see below), whose sum is σ = 121408844421828. Its totient is φ = 103495093213824.

The previous prime is 112120210209989. The next prime is 112120210210067. The reversal of 112120210210021 is 120012012021211.

It can be written as a sum of positive squares in 6 ways, for example, as 7491656193921 + 104628554016100 = 2737089^2 + 10228810^2 .

It is not a de Polignac number, because 112120210210021 - 2⁵ = 112120210209989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112120210209977 and 112120210210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112120210210081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37468591 + ... + 40350163.

It is an arithmetic number, because the mean of its divisors is an integer number (10117403701819).

Almost surely, 2^{112120210210021} is an apocalyptic number.

It is an amenable number.

112120210210021 is a deficient number, since it is larger than the sum of its proper divisors (9288634211807).

112120210210021 is a wasteful number, since it uses less digits than its factorization.

112120210210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111832 (or 3111819 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 112120210210021 its reverse (120012012021211), we get a palindrome (232132222231232).

The spelling of 112120210210021 in words is "one hundred twelve trillion, one hundred twenty billion, two hundred ten million, two hundred ten thousand, twenty-one".