20212003021 has 8 divisors (see below), whose sum is σ = 23100299840. Its totient is φ = 17323923168.

The previous prime is 20212002961. The next prime is 20212003033. The reversal of 20212003021 is 12030021202.

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 20212003021 - 2⁹ = 20212002509 is a prime.

It is a super-2 number, since 2×20212003021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20212002992 and 20212003010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212003121) 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, 297265 + ... + 358873.

It is an arithmetic number, because the mean of its divisors is an integer number (2887537480).

Almost surely, 2^20212003021 is an apocalyptic number.

It is an amenable number.

20212003021 is a deficient number, since it is larger than the sum of its proper divisors (2888296819).

20212003021 is an equidigital number, since it uses as much as digits as its factorization.

20212003021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108483.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20212003021 its reverse (12030021202), we get a palindrome (32242024223).

The spelling of 20212003021 in words is "twenty billion, two hundred twelve million, three thousand, twenty-one".