212115411404434 has 16 divisors (see below), whose sum is σ = 335489631271200. Its totient is φ = 100304553001824.

The previous prime is 212115411404411. The next prime is 212115411404437. The reversal of 212115411404434 is 434404114511212.

It is a junction number, because it is equal to n+sod(n) for n = 212115411404393 and 212115411404402.

It is not an unprimeable number, because it can be changed into a prime (212115411404437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4754649339 + ... + 4754693950.

It is an arithmetic number, because the mean of its divisors is an integer number (20968101954450).

Almost surely, 2^{212115411404434} is an apocalyptic number.

212115411404434 is a deficient number, since it is larger than the sum of its proper divisors (123374219866766).

212115411404434 is a wasteful number, since it uses less digits than its factorization.

212115411404434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9509343897.

The product of its (nonzero) digits is 61440, while the sum is 37.

Adding to 212115411404434 its reverse (434404114511212), we get a palindrome (646519525915646).

The spelling of 212115411404434 in words is "two hundred twelve trillion, one hundred fifteen billion, four hundred eleven million, four hundred four thousand, four hundred thirty-four".