202244138281 has 2 divisors, whose sum is σ = 202244138282. Its totient is φ = 202244138280.

The previous prime is 202244138263. The next prime is 202244138293. The reversal of 202244138281 is 182831442202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202238184681 + 5953600 = 449709^2 + 2440^2 .

It is a cyclic number.

It is not a de Polignac number, because 202244138281 - 2⁵ = 202244138249 is a prime.

It is a super-2 number, since 2×202244138281² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202244138281.

It is not a weakly prime, because it can be changed into another prime (202244138981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101122069140 + 101122069141.

It is an arithmetic number, because the mean of its divisors is an integer number (101122069141).

Almost surely, 2^202244138281 is an apocalyptic number.

It is an amenable number.

202244138281 is a deficient number, since it is larger than the sum of its proper divisors (1).

202244138281 is an equidigital number, since it uses as much as digits as its factorization.

202244138281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49152, while the sum is 37.

The spelling of 202244138281 in words is "two hundred two billion, two hundred forty-four million, one hundred thirty-eight thousand, two hundred eighty-one".