20021002210201 has 2 divisors, whose sum is σ = 20021002210202. Its totient is φ = 20021002210200.

The previous prime is 20021002210133. The next prime is 20021002210277. The reversal of 20021002210201 is 10201220012002.

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., 19212398408025 + 808603802176 = 4383195^2 + 899224^2 .

It is a cyclic number.

It is not a de Polignac number, because 20021002210201 - 2¹³ = 20021002202009 is a prime.

It is not a weakly prime, because it can be changed into another prime (20021002217201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010501105100 + 10010501105101.

It is an arithmetic number, because the mean of its divisors is an integer number (10010501105101).

Almost surely, 2^{20021002210201} is an apocalyptic number.

It is an amenable number.

20021002210201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021002210201 is an equidigital number, since it uses as much as digits as its factorization.

20021002210201 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 20021002210201 its reverse (10201220012002), we get a palindrome (30222222222203).

The spelling of 20021002210201 in words is "twenty trillion, twenty-one billion, two million, two hundred ten thousand, two hundred one".