202102210073 has 2 divisors, whose sum is σ = 202102210074. Its totient is φ = 202102210072.

The previous prime is 202102210067. The next prime is 202102210103. The reversal of 202102210073 is 370012201202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183605394064 + 18496816009 = 428492^2 + 136003^2 .

It is a cyclic number.

It is not a de Polignac number, because 202102210073 - 2⁸ = 202102209817 is a prime.

It is not a weakly prime, because it can be changed into another prime (202102210043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101051105036 + 101051105037.

It is an arithmetic number, because the mean of its divisors is an integer number (101051105037).

Almost surely, 2^202102210073 is an apocalyptic number.

It is an amenable number.

202102210073 is a deficient number, since it is larger than the sum of its proper divisors (1).

202102210073 is an equidigital number, since it uses as much as digits as its factorization.

202102210073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 202102210073 its reverse (370012201202), we get a palindrome (572114411275).

The spelling of 202102210073 in words is "two hundred two billion, one hundred two million, two hundred ten thousand, seventy-three".