211223134110434 has 4 divisors (see below), whose sum is σ = 316834701165654. Its totient is φ = 105611567055216.

The previous prime is 211223134110407. The next prime is 211223134110449. The reversal of 211223134110434 is 434011431322112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 207166998530209 + 4056135580225 = 14393297^2 + 2013985^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211223134110434.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52805783527607 + ... + 52805783527610.

Almost surely, 2^{211223134110434} is an apocalyptic number.

211223134110434 is a deficient number, since it is larger than the sum of its proper divisors (105611567055220).

211223134110434 is a wasteful number, since it uses less digits than its factorization.

211223134110434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105611567055219.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 211223134110434 its reverse (434011431322112), we get a palindrome (645234565432546).

The spelling of 211223134110434 in words is "two hundred eleven trillion, two hundred twenty-three billion, one hundred thirty-four million, one hundred ten thousand, four hundred thirty-four".