2120112021212 has 24 divisors (see below), whose sum is σ = 3978169997760. Its totient is φ = 985070661120.

The previous prime is 2120112021187. The next prime is 2120112021221. The reversal of 2120112021212 is 2121202110212.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

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, 197324489 + ... + 197335232.

It is an arithmetic number, because the mean of its divisors is an integer number (165757083240).

Almost surely, 2^{2120112021212} is an apocalyptic number.

It is an amenable number.

2120112021212 is a deficient number, since it is larger than the sum of its proper divisors (1858057976548).

2120112021212 is a wasteful number, since it uses less digits than its factorization.

2120112021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394659821 (or 394659819 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2120112021212 its reverse (2121202110212), we get a palindrome (4241314131424).

The spelling of 2120112021212 in words is "two trillion, one hundred twenty billion, one hundred twelve million, twenty-one thousand, two hundred twelve".