212021016015 has 8 divisors (see below), whose sum is σ = 339233625648. Its totient is φ = 113077875200.

The previous prime is 212021015977. The next prime is 212021016019. The reversal of 212021016015 is 510610120212.

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

It is not a de Polignac number, because 212021016015 - 2⁶ = 212021015951 is a prime.

It is a super-2 number, since 2×212021016015² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212021015982 and 212021016000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021016019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7067367186 + ... + 7067367215.

It is an arithmetic number, because the mean of its divisors is an integer number (42404203206).

Almost surely, 2^212021016015 is an apocalyptic number.

212021016015 is a deficient number, since it is larger than the sum of its proper divisors (127212609633).

212021016015 is a wasteful number, since it uses less digits than its factorization.

212021016015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14134734409.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 212021016015 its reverse (510610120212), we get a palindrome (722631136227).

The spelling of 212021016015 in words is "two hundred twelve billion, twenty-one million, sixteen thousand, fifteen".