21270274301 has 2 divisors, whose sum is σ = 21270274302. Its totient is φ = 21270274300.

The previous prime is 21270274283. The next prime is 21270274303. The reversal of 21270274301 is 10347207212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20114614276 + 1155660025 = 141826^2 + 33995^2 .

It is a cyclic number.

It is not a de Polignac number, because 21270274301 - 2¹⁴ = 21270257917 is a prime.

Together with 21270274303, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21270274303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10635137150 + 10635137151.

It is an arithmetic number, because the mean of its divisors is an integer number (10635137151).

Almost surely, 2^21270274301 is an apocalyptic number.

It is an amenable number.

21270274301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21270274301 is an equidigital number, since it uses as much as digits as its factorization.

21270274301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 29.

The spelling of 21270274301 in words is "twenty-one billion, two hundred seventy million, two hundred seventy-four thousand, three hundred one".