20021100001127 has 2 divisors, whose sum is σ = 20021100001128. Its totient is φ = 20021100001126.

The previous prime is 20021100001037. The next prime is 20021100001139. The reversal of 20021100001127 is 72110000112002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021100001127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021100003127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010550000563 + 10010550000564.

It is an arithmetic number, because the mean of its divisors is an integer number (10010550000564).

Almost surely, 2^{20021100001127} is an apocalyptic number.

20021100001127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021100001127 is an equidigital number, since it uses as much as digits as its factorization.

20021100001127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 20021100001127 its reverse (72110000112002), we get a palindrome (92131100113129).

The spelling of 20021100001127 in words is "twenty trillion, twenty-one billion, one hundred million, one thousand, one hundred twenty-seven".