212020230021 has 8 divisors (see below), whose sum is σ = 282771510144. Its totient is φ = 141307884960.

The previous prime is 212020230017. The next prime is 212020230073. The reversal of 212020230021 is 120032020212.

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 212020230021 - 2² = 212020230017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020230001) 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, 9721056 + ... + 9742841.

It is an arithmetic number, because the mean of its divisors is an integer number (35346438768).

Almost surely, 2^212020230021 is an apocalyptic number.

It is an amenable number.

212020230021 is a deficient number, since it is larger than the sum of its proper divisors (70751280123).

212020230021 is a wasteful number, since it uses less digits than its factorization.

212020230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19467531.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 212020230021 its reverse (120032020212), we get a palindrome (332052250233).

The spelling of 212020230021 in words is "two hundred twelve billion, twenty million, two hundred thirty thousand, twenty-one".