212030211615 has 16 divisors (see below), whose sum is σ = 339351189216. Its totient is φ = 113048496000.

The previous prime is 212030211611. The next prime is 212030211623. The reversal of 212030211615 is 516112030212.

It is a happy number.

It is not a de Polignac number, because 212030211615 - 2² = 212030211611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212030211611) 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, 2091556 + ... + 2190585.

It is an arithmetic number, because the mean of its divisors is an integer number (21209449326).

Almost surely, 2^212030211615 is an apocalyptic number.

212030211615 is a deficient number, since it is larger than the sum of its proper divisors (127320977601).

212030211615 is a wasteful number, since it uses less digits than its factorization.

212030211615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285450.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 212030211615 its reverse (516112030212), we get a palindrome (728142241827).

The spelling of 212030211615 in words is "two hundred twelve billion, thirty million, two hundred eleven thousand, six hundred fifteen".