212221564035 has 16 divisors (see below), whose sum is σ = 365674079904. Its totient is φ = 104478308352.

The previous prime is 212221563991. The next prime is 212221564081. The reversal of 212221564035 is 530465122212.

It is a happy number.

It is not a de Polignac number, because 212221564035 - 2¹⁰ = 212221563011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212221563987 and 212221564005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544157662 + ... + 544158051.

It is an arithmetic number, because the mean of its divisors is an integer number (22854629994).

Almost surely, 2^212221564035 is an apocalyptic number.

212221564035 is a deficient number, since it is larger than the sum of its proper divisors (153452515869).

212221564035 is a wasteful number, since it uses less digits than its factorization.

212221564035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088315734.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 212221564035 its reverse (530465122212), we get a palindrome (742686686247).

The spelling of 212221564035 in words is "two hundred twelve billion, two hundred twenty-one million, five hundred sixty-four thousand, thirty-five".