10221770437 has 2 divisors, whose sum is σ = 10221770438. Its totient is φ = 10221770436.

The previous prime is 10221770401. The next prime is 10221770453. The reversal of 10221770437 is 73407712201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6658396801 + 3563373636 = 81599^2 + 59694^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221770437 - 2¹⁹ = 10221246149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221770467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110885218 + 5110885219.

It is an arithmetic number, because the mean of its divisors is an integer number (5110885219).

Almost surely, 2^10221770437 is an apocalyptic number.

It is an amenable number.

10221770437 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221770437 is an equidigital number, since it uses as much as digits as its factorization.

10221770437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16464, while the sum is 34.

The spelling of 10221770437 in words is "ten billion, two hundred twenty-one million, seven hundred seventy thousand, four hundred thirty-seven".