212021200015 has 8 divisors (see below), whose sum is σ = 269391642480. Its totient is φ = 159639491712.

The previous prime is 212021199979. The next prime is 212021200031. The reversal of 212021200015 is 510002120212.

It is a happy number.

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

It is not a de Polignac number, because 212021200015 - 2⁹ = 212021199503 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1247183445 + ... + 1247183614.

It is an arithmetic number, because the mean of its divisors is an integer number (33673955310).

Almost surely, 2^212021200015 is an apocalyptic number.

212021200015 is a deficient number, since it is larger than the sum of its proper divisors (57370442465).

212021200015 is a wasteful number, since it uses less digits than its factorization.

212021200015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494367081.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 212021200015 its reverse (510002120212), we get a palindrome (722023320227).

The spelling of 212021200015 in words is "two hundred twelve billion, twenty-one million, two hundred thousand, fifteen".