212122040323430 has 16 divisors (see below), whose sum is σ = 381823066239840. Its totient is φ = 84848061983232.

The previous prime is 212122040323393. The next prime is 212122040323439. The reversal of 212122040323430 is 34323040221212.

It is a junction number, because it is equal to n+sod(n) for n = 212122040323393 and 212122040323402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122040323439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93086210 + ... + 95337749.

It is an arithmetic number, because the mean of its divisors is an integer number (23863941639990).

Almost surely, 2^{212122040323430} is an apocalyptic number.

212122040323430 is a deficient number, since it is larger than the sum of its proper divisors (169701025916410).

212122040323430 is a wasteful number, since it uses less digits than its factorization.

212122040323430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188536543.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 212122040323430 its reverse (34323040221212), we get a palindrome (246445080544642).

The spelling of 212122040323430 in words is "two hundred twelve trillion, one hundred twenty-two billion, forty million, three hundred twenty-three thousand, four hundred thirty".