220426750421 has 2 divisors, whose sum is σ = 220426750422. Its totient is φ = 220426750420.

The previous prime is 220426750399. The next prime is 220426750451. The reversal of 220426750421 is 124057624022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204873916900 + 15552833521 = 452630^2 + 124711^2 .

It is a cyclic number.

It is not a de Polignac number, because 220426750421 - 2¹⁸ = 220426488277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220426750451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110213375210 + 110213375211.

It is an arithmetic number, because the mean of its divisors is an integer number (110213375211).

Almost surely, 2^220426750421 is an apocalyptic number.

It is an amenable number.

220426750421 is a deficient number, since it is larger than the sum of its proper divisors (1).

220426750421 is an equidigital number, since it uses as much as digits as its factorization.

220426750421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 220426750421 in words is "two hundred twenty billion, four hundred twenty-six million, seven hundred fifty thousand, four hundred twenty-one".