10021221009973 has 4 divisors (see below), whose sum is σ = 10021315738720. Its totient is φ = 10021126281228.

The previous prime is 10021221009971. The next prime is 10021221010007. The reversal of 10021221009973 is 37990012212001.

10021221009973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10021221009973 - 2¹ = 10021221009971 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 (10021221009971) 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, 47205513 + ... + 47417326.

It is an arithmetic number, because the mean of its divisors is an integer number (2505328934680).

Almost surely, 2^{10021221009973} is an apocalyptic number.

It is an amenable number.

10021221009973 is a deficient number, since it is larger than the sum of its proper divisors (94728747).

10021221009973 is an equidigital number, since it uses as much as digits as its factorization.

10021221009973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94728746.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 10021221009973 in words is "ten trillion, twenty-one billion, two hundred twenty-one million, nine thousand, nine hundred seventy-three".