213122222112111 has 16 divisors (see below), whose sum is σ = 309051569618400. Its totient is φ = 129853600675200.

The previous prime is 213122222112109. The next prime is 213122222112119. The reversal of 213122222112111 is 111211222221312.

It is a happy number.

It is not a de Polignac number, because 213122222112111 - 2¹ = 213122222112109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213122222112119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27052829536 + ... + 27052837413.

It is an arithmetic number, because the mean of its divisors is an integer number (19315723101150).

Almost surely, 2^{213122222112111} is an apocalyptic number.

213122222112111 is a deficient number, since it is larger than the sum of its proper divisors (95929347506289).

213122222112111 is a wasteful number, since it uses less digits than its factorization.

213122222112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54105667066.

The product of its digits is 384, while the sum is 24.

Adding to 213122222112111 its reverse (111211222221312), we get a palindrome (324333444333423).

The spelling of 213122222112111 in words is "two hundred thirteen trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred twelve thousand, one hundred eleven".