126701456221 has 2 divisors, whose sum is σ = 126701456222. Its totient is φ = 126701456220.

The previous prime is 126701456201. The next prime is 126701456269. The reversal of 126701456221 is 122654107621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91587943225 + 35113512996 = 302635^2 + 187386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126701456221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126701456201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63350728110 + 63350728111.

It is an arithmetic number, because the mean of its divisors is an integer number (63350728111).

Almost surely, 2^126701456221 is an apocalyptic number.

It is an amenable number.

126701456221 is a deficient number, since it is larger than the sum of its proper divisors (1).

126701456221 is an equidigital number, since it uses as much as digits as its factorization.

126701456221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 126701456221 in words is "one hundred twenty-six billion, seven hundred one million, four hundred fifty-six thousand, two hundred twenty-one".