21120112211210 has 16 divisors (see below), whose sum is σ = 38085701445216. Its totient is φ = 8432600558928.

The previous prime is 21120112211201. The next prime is 21120112211227. The reversal of 21120112211210 is 1211221102112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930534952 + ... + 1930545891.

It is an arithmetic number, because the mean of its divisors is an integer number (2380356340326).

Almost surely, 2^{21120112211210} is an apocalyptic number.

21120112211210 is a deficient number, since it is larger than the sum of its proper divisors (16965589234006).

21120112211210 is a wasteful number, since it uses less digits than its factorization.

21120112211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861081397.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21120112211210 its reverse (1211221102112), we get a palindrome (22331333313322).

The spelling of 21120112211210 in words is "twenty-one trillion, one hundred twenty billion, one hundred twelve million, two hundred eleven thousand, two hundred ten".