212203201021 has 8 divisors (see below), whose sum is σ = 242525454080. Its totient is φ = 181882825488.

The previous prime is 212203200991. The next prime is 212203201073. The reversal of 212203201021 is 120102302212.

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 212203201021 - 2³⁷ = 74764247549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212203200986 and 212203201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212203201121) 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, 218226 + ... + 687043.

It is an arithmetic number, because the mean of its divisors is an integer number (30315681760).

Almost surely, 2^212203201021 is an apocalyptic number.

It is an amenable number.

212203201021 is a deficient number, since it is larger than the sum of its proper divisors (30322253059).

212203201021 is an equidigital number, since it uses as much as digits as its factorization.

212203201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938763.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212203201021 its reverse (120102302212), we get a palindrome (332305503233).

The spelling of 212203201021 in words is "two hundred twelve billion, two hundred three million, two hundred one thousand, twenty-one".