212221564034 has 8 divisors (see below), whose sum is σ = 321252826620. Its totient is φ = 105137288496.

The previous prime is 212221563991. The next prime is 212221564081. The reversal of 212221564034 is 430465122212.

It can be written as a sum of positive squares in 2 ways, for example, as 198474705025 + 13746859009 = 445505^2 + 117247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486746489 + ... + 486746924.

Almost surely, 2^212221564034 is an apocalyptic number.

212221564034 is a deficient number, since it is larger than the sum of its proper divisors (109031262586).

212221564034 is a wasteful number, since it uses less digits than its factorization.

212221564034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973493524.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 212221564034 its reverse (430465122212), we get a palindrome (642686686246).

The spelling of 212221564034 in words is "two hundred twelve billion, two hundred twenty-one million, five hundred sixty-four thousand, thirty-four".