212120122222012 has 12 divisors (see below), whose sum is σ = 372279983959800. Its totient is φ = 105754412519216.

The previous prime is 212120122222003. The next prime is 212120122222033. The reversal of 212120122222012 is 210222221021212.

It is a congruent number.

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, 76412146387 + ... + 76412149162.

It is an arithmetic number, because the mean of its divisors is an integer number (31023331996650).

Almost surely, 2^{212120122222012} is an apocalyptic number.

It is an amenable number.

212120122222012 is a deficient number, since it is larger than the sum of its proper divisors (160159861737788).

212120122222012 is a wasteful number, since it uses less digits than its factorization.

212120122222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152824295900 (or 152824295898 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212120122222012 its reverse (210222221021212), we get a palindrome (422342343243224).

The spelling of 212120122222012 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred twenty-two million, two hundred twenty-two thousand, twelve".