1010210021173 has 2 divisors, whose sum is σ = 1010210021174. Its totient is φ = 1010210021172.

The previous prime is 1010210021111. The next prime is 1010210021189. The reversal of 1010210021173 is 3711200120101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 531232526449 + 478977494724 = 728857^2 + 692082^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010210021173 - 2²¹ = 1010207924021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1010210021173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010210025173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505105010586 + 505105010587.

It is an arithmetic number, because the mean of its divisors is an integer number (505105010587).

Almost surely, 2^{1010210021173} is an apocalyptic number.

It is an amenable number.

1010210021173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010210021173 is an equidigital number, since it uses as much as digits as its factorization.

1010210021173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 1010210021173 its reverse (3711200120101), we get a palindrome (4721410141274).

The spelling of 1010210021173 in words is "one trillion, ten billion, two hundred ten million, twenty-one thousand, one hundred seventy-three".