212111321234 has 32 divisors (see below), whose sum is σ = 333729970560. Its totient is φ = 100917222912.

The previous prime is 212111321209. The next prime is 212111321243. The reversal of 212111321234 is 432123111212.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8180162 + ... + 8206050.

It is an arithmetic number, because the mean of its divisors is an integer number (10429061580).

Almost surely, 2^212111321234 is an apocalyptic number.

212111321234 is a deficient number, since it is larger than the sum of its proper divisors (121618649326).

212111321234 is a wasteful number, since it uses less digits than its factorization.

212111321234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26834.

The product of its digits is 576, while the sum is 23.

Adding to 212111321234 its reverse (432123111212), we get a palindrome (644234432446).

The spelling of 212111321234 in words is "two hundred twelve billion, one hundred eleven million, three hundred twenty-one thousand, two hundred thirty-four".