221229213435 has 12 divisors (see below), whose sum is σ = 383463970032. Its totient is φ = 117988913808.

The previous prime is 221229213421. The next prime is 221229213463. The reversal of 221229213435 is 534312922122.

221229213435 is a `hidden beast` number, since 2 + 2 + 1 + 2 + 2 + 9 + 213 + 435 = 666.

It is not a de Polignac number, because 221229213435 - 2⁹ = 221229212923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221229213435.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2458102327 + ... + 2458102416.

It is an arithmetic number, because the mean of its divisors is an integer number (31955330836).

Almost surely, 2^221229213435 is an apocalyptic number.

221229213435 is a deficient number, since it is larger than the sum of its proper divisors (162234756597).

221229213435 is a wasteful number, since it uses less digits than its factorization.

221229213435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916204754 (or 4916204751 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The spelling of 221229213435 in words is "two hundred twenty-one billion, two hundred twenty-nine million, two hundred thirteen thousand, four hundred thirty-five".