210220144903157 has 2 divisors, whose sum is σ = 210220144903158. Its totient is φ = 210220144903156.

The previous prime is 210220144903099. The next prime is 210220144903177. The reversal of 210220144903157 is 751309441022012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157506867430276 + 52713277472881 = 12550174^2 + 7260391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210220144903157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210220144903177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110072451578 + 105110072451579.

It is an arithmetic number, because the mean of its divisors is an integer number (105110072451579).

Almost surely, 2^{210220144903157} is an apocalyptic number.

It is an amenable number.

210220144903157 is a deficient number, since it is larger than the sum of its proper divisors (1).

210220144903157 is an equidigital number, since it uses as much as digits as its factorization.

210220144903157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

Adding to 210220144903157 its reverse (751309441022012), we get a palindrome (961529585925169).

The spelling of 210220144903157 in words is "two hundred ten trillion, two hundred twenty billion, one hundred forty-four million, nine hundred three thousand, one hundred fifty-seven".