10030123220021 has 4 divisors (see below), whose sum is σ = 10030532353452. Its totient is φ = 10029714086592.

The previous prime is 10030123219997. The next prime is 10030123220023. The reversal of 10030123220021 is 12002232103001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2640995512996 + 7389127707025 = 1625114^2 + 2718295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10030123220021 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 (10030123220023) 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, 204529940 + ... + 204578973.

It is an arithmetic number, because the mean of its divisors is an integer number (2507633088363).

Almost surely, 2^{10030123220021} is an apocalyptic number.

It is an amenable number.

10030123220021 is a deficient number, since it is larger than the sum of its proper divisors (409133431).

10030123220021 is an equidigital number, since it uses as much as digits as its factorization.

10030123220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409133430.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 10030123220021 its reverse (12002232103001), we get a palindrome (22032355323022).

The spelling of 10030123220021 in words is "ten trillion, thirty billion, one hundred twenty-three million, two hundred twenty thousand, twenty-one".