10209773345021 has 4 divisors (see below), whose sum is σ = 10213945710912. Its totient is φ = 10205600979132.

The previous prime is 10209773344987. The next prime is 10209773345111. The reversal of 10209773345021 is 12054337790201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10209773345021 - 2³⁴ = 10192593475837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10209773365021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2086179275 + ... + 2086184168.

It is an arithmetic number, because the mean of its divisors is an integer number (2553486427728).

Almost surely, 2^{10209773345021} is an apocalyptic number.

It is an amenable number.

10209773345021 is a deficient number, since it is larger than the sum of its proper divisors (4172365891).

10209773345021 is an equidigital number, since it uses as much as digits as its factorization.

10209773345021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172365890.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 10209773345021 in words is "ten trillion, two hundred nine billion, seven hundred seventy-three million, three hundred forty-five thousand, twenty-one".