212211122021312 has 28 divisors (see below), whose sum is σ = 421288821667560. Its totient is φ = 106059607900416.

The previous prime is 212211122021309. The next prime is 212211122021383. The reversal of 212211122021312 is 213120221112212.

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, 717868418 + ... + 718163969.

It is an arithmetic number, because the mean of its divisors is an integer number (15046029345270).

Almost surely, 2^{212211122021312} is an apocalyptic number.

It is an amenable number.

212211122021312 is a deficient number, since it is larger than the sum of its proper divisors (209077699646248).

212211122021312 is a wasteful number, since it uses less digits than its factorization.

212211122021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436034708 (or 1436034698 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 212211122021312 its reverse (213120221112212), we get a palindrome (425331343133524).

The spelling of 212211122021312 in words is "two hundred twelve trillion, two hundred eleven billion, one hundred twenty-two million, twenty-one thousand, three hundred twelve".