20012221099963 has 2 divisors, whose sum is σ = 20012221099964. Its totient is φ = 20012221099962.

The previous prime is 20012221099901. The next prime is 20012221100029. The reversal of 20012221099963 is 36999012221002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20012221099963 - 2¹³ = 20012221091771 is a prime.

It is not a weakly prime, because it can be changed into another prime (20012221091963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006110549981 + 10006110549982.

It is an arithmetic number, because the mean of its divisors is an integer number (10006110549982).

Almost surely, 2^{20012221099963} is an apocalyptic number.

20012221099963 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012221099963 is an equidigital number, since it uses as much as digits as its factorization.

20012221099963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 20012221099963 in words is "twenty trillion, twelve billion, two hundred twenty-one million, ninety-nine thousand, nine hundred sixty-three".