213311022123 has 32 divisors (see below), whose sum is σ = 295057036800. Its totient is φ = 136914624000.

The previous prime is 213311022121. The next prime is 213311022131. The reversal of 213311022123 is 321220113312.

213311022123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213311022123 - 2¹ = 213311022121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213311022123.

It is not an unprimeable number, because it can be changed into a prime (213311022121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55389148 + ... + 55392998.

It is an arithmetic number, because the mean of its divisors is an integer number (9220532400).

Almost surely, 2^213311022123 is an apocalyptic number.

213311022123 is a deficient number, since it is larger than the sum of its proper divisors (81746014677).

213311022123 is a wasteful number, since it uses less digits than its factorization.

213311022123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213311022123 its reverse (321220113312), we get a palindrome (534531135435).

The spelling of 213311022123 in words is "two hundred thirteen billion, three hundred eleven million, twenty-two thousand, one hundred twenty-three".