212211143430 has 256 divisors, whose sum is σ = 611171205120. Its totient is φ = 46480896000.

The previous prime is 212211143423. The next prime is 212211143449. The reversal of 212211143430 is 34341112212.

It is a self number, because there is not a number n which added to its sum of digits gives 212211143430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 38560059 + ... + 38565561.

It is an arithmetic number, because the mean of its divisors is an integer number (2387387520).

Almost surely, 2^212211143430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212211143430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305585602560).

212211143430 is an abundant number, since it is smaller than the sum of its proper divisors (398960061690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212211143430 is a wasteful number, since it uses less digits than its factorization.

212211143430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5727.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 212211143430 its reverse (34341112212), we get a palindrome (246552255642).

The spelling of 212211143430 in words is "two hundred twelve billion, two hundred eleven million, one hundred forty-three thousand, four hundred thirty".