100210221973 has 2 divisors, whose sum is σ = 100210221974. Its totient is φ = 100210221972.

The previous prime is 100210221953. The next prime is 100210221983. The reversal of 100210221973 is 379122012001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51014094769 + 49196127204 = 225863^2 + 221802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100210221973 is a prime.

It is a super-3 number, since 3×100210221973³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100210221913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50105110986 + 50105110987.

It is an arithmetic number, because the mean of its divisors is an integer number (50105110987).

Almost surely, 2^100210221973 is an apocalyptic number.

It is an amenable number.

100210221973 is a deficient number, since it is larger than the sum of its proper divisors (1).

100210221973 is an equidigital number, since it uses as much as digits as its factorization.

100210221973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

Adding to 100210221973 its reverse (379122012001), we get a palindrome (479332233974).

The spelling of 100210221973 in words is "one hundred billion, two hundred ten million, two hundred twenty-one thousand, nine hundred seventy-three".