1012202100073 has 2 divisors, whose sum is σ = 1012202100074. Its totient is φ = 1012202100072.

The previous prime is 1012202100053. The next prime is 1012202100101. The reversal of 1012202100073 is 3700012022101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 648342208809 + 363859891264 = 805197^2 + 603208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012202100073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012202100073.

It is not a weakly prime, because it can be changed into another prime (1012202100053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506101050036 + 506101050037.

It is an arithmetic number, because the mean of its divisors is an integer number (506101050037).

Almost surely, 2^{1012202100073} is an apocalyptic number.

It is an amenable number.

1012202100073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012202100073 is an equidigital number, since it uses as much as digits as its factorization.

1012202100073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 1012202100073 its reverse (3700012022101), we get a palindrome (4712214122174).

The spelling of 1012202100073 in words is "one trillion, twelve billion, two hundred two million, one hundred thousand, seventy-three".