212003616761 has 8 divisors (see below), whose sum is σ = 217692770400. Its totient is φ = 206339145760.

The previous prime is 212003616739. The next prime is 212003616821. The reversal of 212003616761 is 167616300212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212003616761 is a prime.

It is a super-2 number, since 2×212003616761² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212003616731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6153251 + ... + 6187608.

It is an arithmetic number, because the mean of its divisors is an integer number (27211596300).

Almost surely, 2^212003616761 is an apocalyptic number.

It is an amenable number.

212003616761 is a deficient number, since it is larger than the sum of its proper divisors (5689153639).

212003616761 is a wasteful number, since it uses less digits than its factorization.

212003616761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12341319.

The product of its (nonzero) digits is 18144, while the sum is 35.

Adding to 212003616761 its reverse (167616300212), we get a palindrome (379619916973).

The spelling of 212003616761 in words is "two hundred twelve billion, three million, six hundred sixteen thousand, seven hundred sixty-one".