212020020000021 has 8 divisors (see below), whose sum is σ = 282698274158080. Its totient is φ = 141344222920992.

The previous prime is 212020019999947. The next prime is 212020020000031. The reversal of 212020020000021 is 120000020020212.

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

It is not a de Polignac number, because 212020020000021 - 2²⁹ = 212019483129109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212020019999961 and 212020020000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020020000031) 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, 614068405 + ... + 614413578.

It is an arithmetic number, because the mean of its divisors is an integer number (35337284269760).

Almost surely, 2^{212020020000021} is an apocalyptic number.

It is an amenable number.

212020020000021 is a deficient number, since it is larger than the sum of its proper divisors (70678254158059).

212020020000021 is a wasteful number, since it uses less digits than its factorization.

212020020000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228539515.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 212020020000021 its reverse (120000020020212), we get a palindrome (332020040020233).

The spelling of 212020020000021 in words is "two hundred twelve trillion, twenty billion, twenty million, twenty-one", and thus it is an aban number.