20202220212001 has 2 divisors, whose sum is σ = 20202220212002. Its totient is φ = 20202220212000.

The previous prime is 20202220211989. The next prime is 20202220212007. The reversal of 20202220212001 is 10021202220202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20079369962001 + 122850250000 = 4481001^2 + 350500^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202220212001 - 2²¹ = 20202218114849 is a prime.

It is not a weakly prime, because it can be changed into another prime (20202220212007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101110106000 + 10101110106001.

It is an arithmetic number, because the mean of its divisors is an integer number (10101110106001).

Almost surely, 2^{20202220212001} is an apocalyptic number.

It is an amenable number.

20202220212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202220212001 is an equidigital number, since it uses as much as digits as its factorization.

20202220212001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20202220212001 its reverse (10021202220202), we get a palindrome (30223422432203).

The spelling of 20202220212001 in words is "twenty trillion, two hundred two billion, two hundred twenty million, two hundred twelve thousand, one".