20212200210281 has 2 divisors, whose sum is σ = 20212200210282. Its totient is φ = 20212200210280.

The previous prime is 20212200210277. The next prime is 20212200210313. The reversal of 20212200210281 is 18201200221202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18105739847056 + 2106460363225 = 4255084^2 + 1451365^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212200210281 - 2² = 20212200210277 is a prime.

It is a super-2 number, since 2×20212200210281² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20212200210481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106100105140 + 10106100105141.

It is an arithmetic number, because the mean of its divisors is an integer number (10106100105141).

Almost surely, 2^{20212200210281} is an apocalyptic number.

It is an amenable number.

20212200210281 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212200210281 is an equidigital number, since it uses as much as digits as its factorization.

20212200210281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 20212200210281 its reverse (18201200221202), we get a palindrome (38413400431483).

The spelling of 20212200210281 in words is "twenty trillion, two hundred twelve billion, two hundred million, two hundred ten thousand, two hundred eighty-one".