2101329973 has 2 divisors, whose sum is σ = 2101329974. Its totient is φ = 2101329972.

The previous prime is 2101329959. The next prime is 2101330027. The reversal of 2101329973 is 3799231012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1935384049 + 165945924 = 43993^2 + 12882^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101329973 - 2¹⁷ = 2101198901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101329943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050664986 + 1050664987.

It is an arithmetic number, because the mean of its divisors is an integer number (1050664987).

Almost surely, 2^2101329973 is an apocalyptic number.

It is an amenable number.

2101329973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101329973 is an equidigital number, since it uses as much as digits as its factorization.

2101329973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 2101329973 is about 45840.2658478330. The cubic root of 2101329973 is about 1280.8494469393.

The spelling of 2101329973 in words is "two billion, one hundred one million, three hundred twenty-nine thousand, nine hundred seventy-three".