20202121033427 has 2 divisors, whose sum is σ = 20202121033428. Its totient is φ = 20202121033426.

The previous prime is 20202121033267. The next prime is 20202121033487. The reversal of 20202121033427 is 72433012120202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20202121033427 - 2³⁰ = 20201047291603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20202121033427.

It is not a weakly prime, because it can be changed into another prime (20202121033487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101060516713 + 10101060516714.

It is an arithmetic number, because the mean of its divisors is an integer number (10101060516714).

Almost surely, 2^{20202121033427} is an apocalyptic number.

20202121033427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202121033427 is an equidigital number, since it uses as much as digits as its factorization.

20202121033427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

Adding to 20202121033427 its reverse (72433012120202), we get a palindrome (92635133153629).

The spelling of 20202121033427 in words is "twenty trillion, two hundred two billion, one hundred twenty-one million, thirty-three thousand, four hundred twenty-seven".