212012002000021 has 8 divisors (see below), whose sum is σ = 213537827639360. Its totient is φ = 210486184352928.

The previous prime is 212012002000013. The next prime is 212012002000061. The reversal of 212012002000021 is 120000200210212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212012002000021 - 2³ = 212012002000013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212012001999965 and 212012002000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012002000061) 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, 57626680 + ... + 61195246.

It is an arithmetic number, because the mean of its divisors is an integer number (26692228454920).

Almost surely, 2^{212012002000021} is an apocalyptic number.

It is an amenable number.

212012002000021 is a deficient number, since it is larger than the sum of its proper divisors (1525825639339).

212012002000021 is a wasteful number, since it uses less digits than its factorization.

212012002000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996123.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 212012002000021 its reverse (120000200210212), we get a palindrome (332012202210233).

The spelling of 212012002000021 in words is "two hundred twelve trillion, twelve billion, two million, twenty-one", and thus it is an aban number.