20002121212127 has 2 divisors, whose sum is σ = 20002121212128. Its totient is φ = 20002121212126.

The previous prime is 20002121212097. The next prime is 20002121212133. The reversal of 20002121212127 is 72121212120002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20002121212127 - 2²⁰ = 20002120163551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002121212147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001060606063 + 10001060606064.

It is an arithmetic number, because the mean of its divisors is an integer number (10001060606064).

Almost surely, 2^{20002121212127} is an apocalyptic number.

20002121212127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002121212127 is an equidigital number, since it uses as much as digits as its factorization.

20002121212127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 20002121212127 its reverse (72121212120002), we get a palindrome (92123333332129).

The spelling of 20002121212127 in words is "twenty trillion, two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty-seven".