200020212001021 has 2 divisors, whose sum is σ = 200020212001022. Its totient is φ = 200020212001020.

The previous prime is 200020212001003. The next prime is 200020212001069. The reversal of 200020212001021 is 120100212020002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194896956302500 + 5123255698521 = 13960550^2 + 2263461^2 .

It is a cyclic number.

It is not a de Polignac number, because 200020212001021 - 2⁷ = 200020212000893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200020212000992 and 200020212001010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200020212008021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010106000510 + 100010106000511.

It is an arithmetic number, because the mean of its divisors is an integer number (100010106000511).

Almost surely, 2^{200020212001021} is an apocalyptic number.

It is an amenable number.

200020212001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200020212001021 is an equidigital number, since it uses as much as digits as its factorization.

200020212001021 is an evil number, because the sum of its binary digits is even.

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

Adding to 200020212001021 its reverse (120100212020002), we get a palindrome (320120424021023).

The spelling of 200020212001021 in words is "two hundred trillion, twenty billion, two hundred twelve million, one thousand, twenty-one".