212321520047 has 16 divisors (see below), whose sum is σ = 262440360000. Its totient is φ = 167269646592.

The previous prime is 212321520041. The next prime is 212321520091. The reversal of 212321520047 is 740025123212.

It is a cyclic number.

It is not a de Polignac number, because 212321520047 - 2⁴ = 212321520031 is a prime.

It is a super-3 number, since 3×212321520047³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212321520041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4985672 + ... + 5028077.

It is an arithmetic number, because the mean of its divisors is an integer number (16402522500).

Almost surely, 2^212321520047 is an apocalyptic number.

212321520047 is a deficient number, since it is larger than the sum of its proper divisors (50118839953).

212321520047 is a wasteful number, since it uses less digits than its factorization.

212321520047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10014002.

The product of its (nonzero) digits is 6720, while the sum is 29.

Adding to 212321520047 its reverse (740025123212), we get a palindrome (952346643259).

The spelling of 212321520047 in words is "two hundred twelve billion, three hundred twenty-one million, five hundred twenty thousand, forty-seven".